[X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE

SECURITIES AND EXCHANGE ACT OF 1934

For the the periods ended December 31, 2011 and December 31, 2012

OR

[ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

For the transition period from ____________ to ______________

Commission File Number 1 - 12777

A. Full title of the plan and the address of the plan, if different from that of the issuer named below:

AZZ incorporated Employee Benefit Plan & Trust

B. Name of issuer of the securities held pursuant to the plan and the address of its principal executive office:

AZZ incorporated

One Museum Place

3100 West 7th Street, Suite 500

Fort Worth, Texas 76107

REQUIRED INFORMATION

The AZZ incorporated Employee Benefit Plan & Trust is subject to the requirements of the Employee Retirement Income Security Act of 1974 (“ERISA”). Attached hereto is a copy of the most recent financial statements and schedules of the AZZ incorporated Employee Benefit Plan & Trust prepared in accordance with the financial reporting requirements of ERISA.

AZZ incorporated

Employee Benefit Plan and Trust

Financial Statements

and Supplemental Schedule

Periods Ended December 31, 2012 and December 31, 2011

with Report of Independent

Registered Public Accounting Firm

Table of Contents

Report of Independent Registered Public Accounting Firm		1
Financial Statements:
	Statements of Net Assets Available for Benefits	2
	Statements of Changes in Net Assets Available for Benefits	3
Notes to Financial Statements		4-10
Supplemental Schedule:
	Schedule of Assets (Held at End of Year)	11

NOTE: All other schedules required by the Department of Labor's Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974 have been omitted since they are either not applicable or the information required therein has been included in the financial statements or notes thereto.

1

AZZ incorporated Employee Benefit Plan and Trust
Statements of Net Assets Available for Benefits
			December 31, 2012		December 31, 2011
Assets
Investments, at fair value:
	Shares of registered investment companies:
		Mutual funds	$	56,494,894	$	46,385,745
	AZZ incorporated common stock		856,776		696,466
	Money market fund		7,081,302		6,832,247
Total investments			64,432,972		53,914,458
Receivables:
	Employer contributions		10,784		79,872
	Participant contributions		25,397		152,977
	Notes receivable from participants		2,715,516		2,713,788
	Other		15		65,166
Total receivables			2,751,712		3,011,803
Total assets			67,184,684		56,926,261
Liabilities			—		—
Net Assets Available for Benefits			$	67,184,684	$	56,926,261

See accompanying notes to financial statements.

AZZ incorporated Employee Benefit Plan and Trust
Statements of Changes in Net Assets Available for Benefits
				Ten Month
		Year Ended		Period Ended
		December 31, 2012		December 31, 2011
Additions to Net Assets
Investment income:
	Interest and dividend income	$	2,012,682	$	1,214,800
	Net realized and unrealized gain (loss)	5,405,150		(4,185,778		)
	Other losses	—		(177		)
Total investment income (loss)		7,417,832		(2,971,155		)
Contributions received or receivable:
	Employer	7,247,882		1,506,563
	Participants	4,105,333		3,022,783
	Others (including rollovers)	867,880		80,572
Total contributions		12,221,095		4,609,918
Total additions		19,638,927		1,638,763
Deductions from Net Assets
Benefits paid to participants		9,283,781		7,417,194
Other fees/expenses		96,723		37,997
		9,380,504		7,455,191
Net increase (decrease) in net assets available for benefits		10,258,423		(5,816,428		)
Net assets available for benefits at beginning of period		56,926,261		$	62,742,689
Net assets available for benefits at end of period		$	67,184,684	$	56,926,261

See accompanying notes to financial statements.

AZZ incorporated Employee Benefit Plan and Trust

Notes to Financial Statements

A. Description of the Plan

The following description of the AZZ incorporated Employee Benefit Plan and Trust (the “Plan”) provides only general information. The Plan is sponsored by AZZ incorporated (the “Company”). Participants should refer to the Plan Agreement or Summary Plan Description for a more complete description of the Plan's provisions.

General

Effective March 1, 2011, the plan was amended to change to a calendar year end reporting period from a February 28 fiscal year end with a short plan year running from March 1, 2011 to December 31, 2011.

The Plan is a defined contribution plan covering substantially all full-time employees of the Company and its affiliates who have completed ninety days of service and attained 18 years of age. Eligibility for profit sharing begins after one year of service.

The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974 (“ERISA”).

Effective August 1, 2009, the Company adopted the Mass Mutual Defined Contribution Prototype Plan and Trust and appointed State Street Trust as trustee of the trust established under the Plan. Plan assets were moved to Mass Mutual effective August 1, 2009.

Effective January 1, 2011, the North American Galvanizing Savings-Investment-Retirement Plan and the NAGLV-Ohio, Inc. Hourly Employees 401(k) Plan were merged into the Plan. This merger saw the transfer of $9,678,269 of assets and 417 participants into the Plan.

Effective June 3, 2011, the trustee of the plan was changed from State Street Trust to Reliance Trust Company.

Contributions

Participants may elect to contribute from 1% to 50% of their eligible compensation, subject to Internal Revenue Service (“IRS”) limitations. The Company provides discretionary matching contributions equal to a percentage of participant contributions as determined annually by the Company's Board of Directors. Additionally, the Company may contribute discretionary profit sharing amounts to the Plan as determined each year by the Company's Board of Directors. To be eligible for profit sharing contributions, participants must be actively employed on the last day of the Plan year, must have completed 1,000 hours of service and completed one year of service.

Participants may elect to commence voluntary contributions or modify the amount of voluntary contributions made on the first day of each quarter within the Plan year.

Participants who are eligible to make salary deferral contributions under the Plan and who have attained age 50 before the close of the Plan year may make catch-up contributions in accordance with, and subject to the limitations imposed by the Code.

Participant Accounts

A separate account is maintained for each participant and is credited with participant contributions, Company contributions, and actual earnings thereon as well as forfeitures of terminated participants' non-vested accounts.

Forfeited Accounts

Effective March 1, 2011 with amendment 5, forfeited balances of terminated participants' non-vested accounts are first used to pay plan expenses and any remainder is to be reallocated among the remaining participants in the proportion that each participant's compensation for the period bears to the total compensation of all participants for the period. Reallocation will be completed the period following in which the forfeiture occurs.

4

AZZ incorporated Employee Benefit Plan and Trust

Notes to Financial Statements (continued)

Investment Options

Unless specifically electing not to defer, all employees are automatically enrolled in the plan in accordance with the terms and provisions of the Safe Harbor Amendment. Participants may direct contributions to their account in a variety of investment options, which vary in degree of risk, with the exception of AZZ incorporated common stock for which participants may only hold or sell existing shares. Participants may change their investment options at any time. Investments are held by Mass Mutual, the record keeper, funding agent, and a party-in-interest. Under a trust agreement with the Company, Reliance Trust Company is the directed trustee. The Plan's assets are invested in accordance with directions provided by the Company.

Vesting

Participant contributions to the Plan plus actual earnings or losses thereon are fully vested at all times. The participant's share of matching contributions and profit sharing contributions and earnings and losses thereon which were contributed to the plan prior to March 1, 2008 vest in accordance with the following schedule:

Years of Service	Vesting Percentage
Less than 1 year	0	%
1 year	20	%
2 years	40	%
3 years	60	%
4 years	80	%
5 years	100	%

Effective March 1, 2008, the participants of Qualified Automatic Contribution Agreement (“QACA”) matching contributions and earnings and losses thereon vest in accordance with the Safe Harbor provisions and the following schedule:

Years of Service	Vesting Percentage
Less than 2 years	0	%
2 years	100	%

Profit sharing contributions continue to vest over the five year vesting schedule.

Participants will vest 100% upon attainment of age 65, or in the event of death or disability while employed by the Company.

Notes Receivable from Participants

Participants may borrow from their account a minimum of $1,000 up to a maximum equal to the lesser of $50,000 or 50% of their vested account balance. Loan terms range from one to fifteen (15) years. The loans are secured by the balance in the participant's account and bear interest at prime at the time of loan origination. Interest rates for loans at the end of 2012 ranged from 3.25% to 8.25%. Principal and interest are paid ratably through payroll deductions.

5

AZZ incorporated Employee Benefit Plan and Trust

Notes to Financial Statements (continued)

Plan Distributions

On termination of service, if a participant's vested benefits are less than $1,000, the benefit is distributed to the participant in a lump sum. If the vested benefit is between $1,000 and $5,000 the participant may elect to receive either a lump-sum amount or the vested benefit will be automatically rolled over to an IRA provider selected by the Plan Administrator. If the vested benefit exceeds $5,000, the participant may elect to receive a lump-sum amount either as cash or roll over into an IRA or to another qualified plan or as a series of installment payments.

Prior to termination of service, a participant may elect to receive all or any vested portion of amounts attributable to employer contributions if the participant has been employed by the Company at least five years or is at least 59 ½.

B. Summary of Significant Accounting Policies

Basis of Accounting

The financial statements of the Plan are presented on the accrual basis of accounting in accordance with accounting principles generally accepted in the United States of America (GAAP).

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Accordingly, actual results may differ from these estimates.

Investment Valuation

The investments of the Plan are stated at fair value as of the end of the Plan period.

Purchases and sales of securities are recorded on the trade dates. Gains or losses on sales of securities are calculated using the average cost of the securities sold. Interest income is recorded on the accrual basis.

All investments and uninvested cash were held by Mass Mutual under a trust agreement. The Plan's investments are generally subject to market or credit risks customarily associated with debt and equity investments.

Recently Adopted Accounting Guidance

In March 2010, the Plan adopted the guidance issued by the Financial Accounting Standards Board (FASB) on the classification of participant loans on the statement of net assets available for benefits. The guidance requires that participant loans be classified as notes receivable from participants, which are segregated from plan investments and measured at their unpaid principal balance plus any accrued but unpaid interest. Adoption of this new guidance did not have a material impact on the Plan's financial statements.

On March 1, 2010, the Plan adopted guidance issued by the FASB to amend the disclosure requirements related to recurring and nonrecurring fair value measurements. The guidance required new disclosures on the transfers of assets and liabilities between Level 1 (quoted prices in an active market for identical assets or liabilities) and Level 2 (significant other observable inputs) of the fair value measurement hierarchy, including the reasons and the timing of the transfers. Additionally, the guidance required disclosing the gross values in a roll forward of activities on purchases, sales, issuance, and settlements of the assets and liabilities measured using significant unobservable inputs (Level 3 fair value measurements). The guidance became effective for the Plan on March 1, 2010, except for the disclosure on the roll forward activities for Level 3 fair value measurements, which was effective for the Plan for the reporting period ended December 31, 2011. Other than requiring additional disclosures, the adoption of this new guidance did not have a material impact on the Plan's financial statements.

On January 1, 2012 the plan adopted guidance issued by the FASB to amend the accounting and disclosure requirements on fair value measurements. The new guidance limits the highest-and-best-use measure only to nonfinancial assets,

6

AZZ incorporated Employee Benefit Plan and Trust

Notes to Financial Statements (continued)

permits the fair value measurement of certain financial assets and liabilities with offsetting positions in market risks or counterparty credit risks to be measured at a net basis, and provides guidance on whether the applicability of premiums and discounts can be applied in fair value measurement. Other than requiring additional disclosures, we do not anticipate material impacts on the Plan's financial statements upon adoption.

Notes Receivable from Participants

Notes receivable from participants are recorded at their unpaid principal balance plus any accrued but unpaid interest.

Contributions

Participant and employer contributions are accrued in the period in which they are deducted in accordance with salary deferral agreements and as they become obligations of the Company, as determined by the Plan's administrator.

Payment of Benefits

Benefits are recorded when paid.

Plan Expenses

Employees of the Company perform certain administrative functions with no compensation from the Plan. The Company or the Plan pays administrative expenses of the Plan. Administrative expenses paid by the Plan are properly reflected in the accompanying statements of changes in net assets available for benefits.

Subsequent Events

The Plan evaluated all events or transactions that occurred after December 31, 2012 through the date these financial statements were issued.

C. Investments

At December 31, 2012 and December 31, 2011, individual investments that represent 5% or more of net assets available for benefits were as follows:

	December 31, 2012
MFS Value Fund	$	6,187,919
Premier Money Market Fund	7,012,033
American Century Growth Fund	7,741,753
American Funds EuroPacific Growth Fund	5,458,106
PIMCO Total Return Fund	10,877,205
Columbia Mid-Cap Growth Fund	4,373,085
T. Rowe Price Retirement 2030 Fund	3,688,599
	December 31, 2011
MFS Value Fund	$	5,416,745
Premier Money Market Fund	6,832,247
American Funds Growth Fund of America	6,387,125
American Funds EuroPacific Growth Fund	4,581,404
PIMCO Total Return Fund	9,665,414
Columbia Mid-Cap Growth Fund	3,442,978

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AZZ incorporated Employee Benefit Plan and Trust

Notes to Financial Statements (continued)

During the plan year ended December 31, 2012 and the 10 month period ended December 31, 2011, net realized and unrealized gains (losses) were comprised of the following:

	December 31, 2012		December 31, 2011
Mutual funds	$	4,961,129	$	(4,238,032	)
AZZ incorporated common stock	444,021		52,254
Net realized and unrealized gains (losses)	$	5,405,150	$	(4,185,778	)

D. Fair Value Measurements

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. A three-tier hierarchy for inputs used in determining fair value focuses on the inputs used to measure fair value and requires that the lowest level input be used. The three levels are defined as follows:

- Level 1: Inputs are unadjusted, quoted prices in active markets for identical assets or liabilities as of the reporting date.

- Level 2: Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly.

- Level 3: Unobservable inputs that are not corroborated by market data.

A description of the methodologies used to measure the fair value of assets follows. These methodologies were consistently applied to all assets carried as of December 31, 2012 and December 31, 2011. The methodology used to measure each major category of assets and liabilities is as follows:

- Mutual funds: Valued based on quoted market prices of the underlying assets provided by the trustee and are classified within Level 1 of the valuation hierarchy.

- Common stock: Valued at the closing price reported on the active market on which the individual securities are traded and classified within Level 1 of the valuation hierarchy.

- Money market fund: Valued based on the short-term cash component as of the measurement date and classified within Level 1 of the valuation hierarchy.

8

AZZ incorporated Employee Benefit Plan and Trust

Notes to Financial Statements (continued)

	Fair Value Measurements at December 31, 2012 Using
	Total Carrying Value as of December 31, 2012		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)	Significant Unobservable Inputs (Level 3)
Common Stock	$	856,776	$	856,776
Bond Fund	—		—
Growth Funds	17,572,944		17,572,944
Income Funds	85,135		85,135
Indexed Equity Funds	3,326,826		3,326,826
Total Return Funds	10,877,205		10,877,205
Target Date Funds	18,444,864		18,444,864
Money Market Funds	7,081,303		7,081,303
Value Fund	6,187,919		6,187,919
Total Assets at Fair Value	$	64,432,972	$	64,432,972

	Fair Value Measurements at December 31, 2011 Using
	Total Carrying Value as of December 31, 2011		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Observable Inputs (Level 2)	Significant Unobservable Inputs (Level 3)
Common Stock	$	696,466	$	696,466
Bond Fund	2,306		2,306
Growth Funds	14,391,507		14,391,507
Income Funds	44,204		44,204
Indexed Equity Funds	2,159,845		2,159,845
Total Return Funds	9,665,414		9,665,414
Target Date Funds	14,705,724		14,705,724
Money Market Funds	6,832,247		6,832,247
Value Fund	5,416,745		5,416,745
Total Assets at Fair Value	$	53,914,458	$	53,914,458

E. Forfeited Accounts

At December 31, 2012, net assets available for benefits include approximately $279,652 of unallocated forfeitures. Unallocated forfeiture amounts at December 31, 2012 will be appropriately allocated during the 2013 Plan year. $163,108 of unallocated forfeiture amounts at December 31, 2011 were allocated during the current period.

F. Plan Termination

Although it has not expressed any intent to do so, the Company has the right under the Plan to discontinue its contributions at any time and to terminate the Plan subject to the provisions of ERISA. In the event of Plan termination, participants will become 100% vested in their accounts.

G. Income Tax Status

The plan obtained its latest determination letter on January 4, 2012, in which the Internal Revenue Service stated that the plan, as then designed, was in compliance with the applicable requirements of the Internal Revenue Code. The

9

AZZ incorporated Employee Benefit Plan and Trust

Notes to Financial Statements (continued)

plan has been amended since receiving the determination letter. However, the plan administrator and the plan's tax counsel believe that the plan is currently designed and being operated in compliance with the applicable requirements of the Internal Revenue Code.

Effective March 1, 2008, the Plan was amended to become a safe-harbor Qualified Automatic Contribution Arrangement (“QACA”), pursuant to Section 401(k)(13) of the Code, as added by the Pension Protection Act of 2006. As required by section 401(k) of the Code, the Plan provides that employees may not receive a distribution of their employee deferral contributions while actively employed by AZZ, unless they have attained age 59½, or have experienced a financial hardship.

GAAP requires Plan management to evaluate tax positions taken by the plan and recognize a tax liability (or asset) if the Plan has taken an uncertain position that more likely than not would not be sustained upon examination by the IRS. The Plan Administrator has analyzed the tax positions taken by the Plan, and has concluded that as of December 31, 2012 and December 31, 2011, there were no uncertain positions taken or expected to be taken that would require recognition of a liability (or asset) and believes the Plan is being operated in compliance with the applicable requirements of the Code and, therefore, believes that the Plan is qualified and the related trust continues to be tax exempt. Therefore, no provision for income taxes has been included in the Plan's financial statements.

H. Plan Amendments

Effective March 1, 2008, the Plan was amended to become a safe-harbor Qualified Automatic Contribution Arrangement (“QACA”), pursuant to Section 401(k)(13) of the Code, as added by the Pension Protection Act of 2006.

Effective May 1, 2010, Adoption Agreement section 10-1 of the Plan was amended to restrict in-service distributions of employer discretionary funds only after the employee has been employed by the employer for five (5) years.

Effective June 1, 2010, Loan Policy section B-8 of the Plan was amended to permit participant loan refinancing.

Effective January 1, 2011, Adoption Agreement section A-15 of the Plan was amended to merge the North American Galvanizing Savings-Investment-Retirement Plan and the NAGLV-Ohio, Inc. Hourly Employees 401(k) Plan into the Plan.

Effective March 1, 2010, Section IA2-6(d)(1)(ii) of the Plan was amended to change the period for determining the QACA matching contribution from Plan Year to payroll period.

Effective March 1, 2011, the plan was amended to change to a calendar year end reporting period from a February 28 fiscal year end with a short plan year running from March 1, 2011 to December 31, 2011. It also amended forfeiture use to reduce plan expenses. Any remaining forfeitures will be available for allocation.

Effective March 1, 2011, the Administrative Services Agreement was amended to allow the Plan Administrator to provide the Transfer Agent with a listing of the name, address and equivalent shares attributable to each Participant on the record date. The Transfer Agent will provide participants with the Proxy materials and collect and tabulate the votes and report the tabulation to the Trustee/Custodian.

Effective July 1, 2012, the plan was amended to add Nuclear Logistics Incorporated as a related and participating partner and to update the 'service with a predecessor employer' information to include Nuclear Logistics Incorporated.

Plan Amendment Not Yet Adopted

Effective January 1, 2013, the plan was amended to exclude all fringe benefits, expense reimbursements, deferred compensation and welfare benefits from plan compensation for deferral and employer contributions other than matching contributions; that plan compensation shall be deemed “§125 compensation” as defined in section 1.126 of the plan, and to change the compensation period and period for determining the employer contribution to that of the company fiscal year: March 1 to February 28.

10

Supplemental Schedule

AZZ incorporated Employee Benefit Plan and Trust
Schedule of Assets (Held at End of Year)
December 31, 2012
Plan: 001
EIN: 75-0948250
(a)	(b) Identity of issue, borrower, lessor or similar party	(c) Description of investment including maturity date, rate of interest, collateral, par or maturity value	(d) Cost	(e) Current Value
*	Mass Mutual	Holding Account	**	$	69,270
*	Columbia Acorn Fund	Mid Cap Growth Fund	**	4,373,085
*	Babson Capital	Premier Money Market Fund	**	7,012,033
*	Northern Tr Select (MF-X)	Indexed Equity Fund	**	3,326,826
*	MFS Investment Management	Value Fund	**	6,187,919
*	T. Rowe Price	Retirement 2005 Fund	**	74,659
*	T. Rowe Price	Retirement 2010 Fund	**	1,449,227
*	T. Rowe Price	Retirement 2015 Fund	**	2,296,404
*	T. Rowe Price	Retirement 2020 Fund	**	2,259,141
*	T. Rowe Price	Retirement 2025 Fund	**	2,574,901
*	T. Rowe Price	Retirement 2030 Fund	**	3,688,599
*	T. Rowe Price	Retirement 2035 Fund	**	1,351,327
*	T. Rowe Price	Retirement 2040 Fund	**	2,067,003
*	T. Rowe Price	Retirement 2045 Fund	**	1,269,272
*	T. Rowe Price	Retirement 2050 Fund	**	1,096,434
*	T. Rowe Price	Retirement 2055 Fund	**	317,897
*	T. Rowe Price	Income Fund	**	85,135
*	American Funds	EuroPacific Growth Fund	**	5,458,106
*	PIMCO	Total Return Fund	**	10,877,205
*	American Century Growth Fund	Growth Fund	**	7,741,753
*	AZZ incorporated	AZZ incorporated common stock	**	856,776
	Participant Loans	Interest rates ranging from 3.25% to 8.25%	-0-	2,715,516
		maturing at various dates through 2017		$	67,148,488
*	Represents a party-in-interest to the Plan.
**	Cost omitted for participant directed investments.

See accompanying notes to financial statements.