ASTM-A875 Standard Specification for Steel Sheet, Zinc-5 % Aluminum Alloy-Coated by the Hot-Dip Process

ASTM-A875 - 2013 EDITION - CURRENT
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This specification covers steel sheet, in coils and cut lengths, metallic-coated by the hot-dip process, with zinc-aluminum alloy coating. The coating is produced as two types: zinc-aluminum-mischmetal alloy (Type I) and zinc-aluminum-magnesium alloy (Type II), and in two coating structures. Coated sheet is produced in several coating designations (coating weight [mass]). Material is classified in terms of the base metal and in terms of the coating. Base metal material classification is as follows: commercial steel (CS Types A, B, and C), forming steel (FS Types A and B), deep drawing steel (DDS), extra deep drawing steel (EDDS), structural steel (SS), high-strength low-alloy steel (HSLAS), and high-strength low-alloy steel with improved formability (HSLAS-F). Structural steel and high strength low alloy steel are available in several grades based on mechanical properties. Structural steel grade 50 [340] is available in three classes based on tensile strength. Heat analysis of the base metal for CS , FS, DDS, and EDDS shall conform to the chemical composition requirements in carbon, manganese, phosphorus, sulfur, aluminum, copper, nickel, chromium, molybdenum, vanadium, titanium, nitrogen, and boron and chemical composition in carbon, manganese, phosphorus, sulfur, copper, nickel, chromium, molybdenum, vanadium, titanium, nitrogen for SS, HSLAS, and HSLAS-F. Structural steel shall conform to the required yield strength, tensile strength, and elongation. Coating shall conform to the coating weight according to triple-spot test and single-spot test and shall be capable of bending without flaking.

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Scope

1.1 This specification covers steel sheet, in coils and cut lengths, metallic-coated by the hot-dip process, with zinc-5 % aluminum alloy coating. The Zn-5Al alloy coating also contains small amounts of elements other than zinc and aluminum that are intended to improve processing and the characteristics of the coated product.

1.2 The coating is produced as two types: zinc-5 % aluminum-mischmetal alloy (Type I) and zinc-5 % aluminum-0.1 % magnesium alloy (Type II), and in two coating structures (classes). The coated sheet is produced in several coating designations (coating weight [mass]).

1.3 The material is intended for applications requiring corrosion resistance, formability, and paintability.

1.4 The steel sheet is produced in a number of designations, types, grades, and classes designed to be compatible with differing application requirements.

1.5 Coated sheet material furnished under this specification shall conform to the applicable requirements of the latest issue of Specification A924/A924M, unless otherwise provided herein.

1.6 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes, excluding tables and figures, shall not be considered as requirements of this specification.

1.7 This specification is applicable to orders in either inch-pound units (as A875) or metric (SI) units [as A875M]. Values in inch-pound and SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents. Therefore, each system shall be used independently of the other.

1.8 Unless the order specifies the “M” specification designation (SI units), the material shall be furnished to inch-pound units.

1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

coatings, metallic; steel sheet, zinc alloy coated; steel sheet, zinc coated; zinc alloys; zinc-coated steel; zinc-5 % aluminum-0.1 % magnesium alloy-coated steel; zinc-5 % aluminum alloy-coated steel; zinc-5 % aluminum-mischmetal alloy-coated steel; ICS Number Code 77.140.50 (Flat steel products and semi-products)

To find similar documents by ASTM Volume:

01.06 (Coated Steel Products)

To find similar documents by classification:

77.140.50 (Flat steel products and semi-products Including plate, sheet and strip Steel strips for springs, see 77.140.25)

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Document Number

ASTM-A875/A875M-13

Revision Level

2013 EDITION

Status

Current

Modification Type

Revision

Publication Date

April 1, 2013

Document Type

Specification

Page Count

8 pages

Committee Number

A05.11