FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * HOFFMAN JAMES DONALD   2. Issuer Name and Ticker or Trading Symbol RELIANCE STEEL & ALUMINUM CO [RS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP, Chief Operating Officer (Last) (First) (Middle) 350 SOUTH GRAND AVENUE, SUITE 5100 3. Date of Earliest Transaction (Month/Day/Year) 02/27/2017 (Street) LOS ANGELES, CA 90071 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 02/27/2017   M   1,500 A (1) 31,481 D   Common Stock 02/27/2017   F   602 D $ 85.29 30,879 D   Common Stock               914 (2) I Held by Trustee of Reliance Steel & Aluminum Co. Employee Stock Ownership Plan Common Stock               3,354 I Held by Trustee of Reliance Steel & Aluminum Co. 401(k) Plan

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Restricted Stock Units

(1)

02/27/2017

M

1,500

(3)

(3)

Common Stock

1,500

$ 0

0 (4)

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
HOFFMAN JAMES DONALD 350 SOUTH GRAND AVENUE SUITE 5100 LOS ANGELES, CA 90071			EVP, Chief Operating Officer

Signatures

/s/ James Donald Hoffman by William A. Smith II as his Attorney-in-Fact		03/10/2017
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Each restricted stock unit represents a contingent right to receive one share of RS common stock and certain dividend equivalents.
(2)	Reflects an Employee Stock Ownership Plan allocation that has occurred since the date of the reporting person's last ownership report.
(3)	1,500 restricted stock units vested on February 27, 2017.
(4)	The reporting person also owns 3,480 shares of phantom stock (to be satisfied by a cash payment to the reporting person upon the termination of his employment with the Issuer) as of the date of this report, which number increased by 76 shares since the date of the reporting person's last ownership report reporting such shares of phantom stock.

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