通用公司标准GMW 15935-2010 金属材料规格-热屏蔽应用用铝板

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WORLDWIDE

ENGINEERING

STANDARDS

Material Specification

Metals

GMW15935

Aluminum Sheet for Heat Shield Applications

February 2010

Originating Department: North American Engineering Standards

Page 1 of 9

1 Scope

This standard covers the requirements for wrought

aluminum alloy sheet for heat shields. This

standard is applicable only to non-age hardenable

aluminum alloys. Non-age hardenable aluminum

alloy sheet supplied to the standard shall be

formable by conventional cold stamping processes.

Non-age hardenable aluminum alloy sheet

supplied to this standard can be utilized to

fabricate single monolithic sheet heat shields,

multilayer sheet heat shields, or the skins of

composite heat shield assemblies consisting of

thermal barrier textile. Thermal barrier textiles are

covered by separate material specifications.

Additional requirements or agreements shall be

specified by each region (e.g., GMNA, GME,

GMLAAM, GMAP, etc.)

1.1 Material Description. The material

designation is defined by the GMW base metal

standard number, aluminum alloy series number

(1000, 3000, 4000, or 5000), a letter to differentiate

specific aluminum alloy grades, a temper

designation, and, if applicable, a designation for

surface texture.

1.2 Symbols. Not applicable.

1.3 Typical Applications. Typical applications

include underbody heat shields and exhaust

system heat shields.

2 References

Note: Only the latest approved standards are

applicable unless otherwise specified.

2.1 External Standards/Specifications.

ASTM E34

ISO 6892

ASTM E101

ISO 10113

ASTM E517

ISO 10275

ASTM E607

ISO 11014-1

ASTM E1251

ISO TS16949

EN 573

JIS H4000

ISO 209-1

2.2 GM Standards/Specifications.

EMS.ME.1508

GMW3335

GM6180M

GMW14019

GMW3001

GMW15420

GMW3059

2.3 Additional References.

 Aluminum Association Standards and Data –

Metric SI

 ME-Lastenheft

3 Requirements

The following section defines specific requirements

for material on delivery, processing, performance

and other stages during life cycle. Deviations

required for regional GM business units are listed

in the Deviation Sheet at the end of this standard.

In cases of dispute, the GMW15935 standard shall

take precedence.

3.1 Requirements on Delivery.

3.1.1 Chemical Requirements.

3.1.1.1 Base Metal. Base metal chemical

compositions shall conform to the requirements of

Table A1. Additional demands and restrictions may

be imposed by regional Materials Engineering

organizations depending upon the application. The

base metal chemical composition shall be

determined per ASTM E34, ASTM E101,

ASTM E607, ASTM E1251 or EN 573. In cases of

dispute, referee method shall be ASTM E34. For

reference, ISO, AA, EN, and JIS base metal

chemical compositions designations are shown in

Table A2.

Note: Only the latest approved standards are

applicable unless otherwise specified.

3.1.2 Mechanical Requirements.

3.1.2.1 Tensile Mechanical Property

Requirements. The aluminum products shall meet

the mechanical properties as specified in Table A3.

Longitudinal sheet direction mechanical properties

shall be determined per GMW3335. Tests shall be

performed using samples per ISO 6892 Type 1

(50°mm gage length ASTM type sample).

GM WORLDWIDE ENGINEERING STANDARDS

GMW15935

February 2010

Page 2 of 9

3.1.3 Physical Requirements.

3.1.3.1 Material Thickness and Tolerance. The

sheet thickness tolerance requirements listed in

Table A4 shall be guaranteed.

3.1.3.2 Surface Requirements.

3.1.3.2.1 Surface Condition. Specific surface

condition requirements for each region are detailed

the Deviation Sheet at the end of this document.

3.1.3.2.2 Surface Quality. The aluminum sheet

shall be supplied as unexposed (U) surface quality

Surface imperfections such as pores, slight

indentations, small marks, minor scratches, and

slight coloring, which do not affect formability and

part performance are allowed.

3.1.3.2.3 Textured Surfaces. Aluminum heat

shields supplied with a two dimensional textured,

or dimpled surface shall meet nominal dimensional

requirements in the longitudinal direction shown in

Table A5. Textured or dimpled surface pattern type

shall be specified by adding “TEX A”, “TEX B” or

“TEX C” designation to materials specification.

Dimpled or textured surface nominal dimensions

are shown in Figures A1 and A2.

3.1.3.2.4 Surface Treatment. Mill-applied products

must be approved to GMW14019 and/or approved

by the regional business unit.

3.1.3.2.5 Typical Base Metal Density Values. For

theoretical calculation of product and part mass,

the typical base metal densities shown in Table A6

shall be used. This information is for GM

Engineering Information only. The information in

Table A6 is not guaranteed by the supplier.

3.1.3.2.6 Typical Base Metal Maximum Service

Temperatures Values. For comparison purposes,

the typical base metal maximum service

temperatures are shown in Table A7. This

information is for GM Engineering Information only.

The information in Table A7 is not guaranteed by

the supplier.

3.1.4 Additional Requirements.

3.1.4.1 Lot Identification. All shipments of

production aluminum sheet products shall show

the production date on the supplier’s material

certification warrant.

3.1.4.2 Other Requirements. Requirements such

as tolerances on product shape and dimensions,

inspections units, number of tests, sampling, test

conditions, re-tests, inspection documents,

packing, and handling of disputes shall be agreed

upon between supplier and the regional business

unit.

3.2 Processing Requirements. Not applicable.

3.3 Performance Requirements. Not applicable.

3.4 Requirements on Other Stages During Life

Cycle. Not applicable.

4 Manufacturing Process

Not applicable.

5 Rules and Regulations

5.1 All materials supplied to this standard must

comply with the requirements of GMW3001, Rules

and Regulations for Material Specifications.

5.2 All materials supplied to this standard must

comply with the requirements of GMW3059,

Restricted and Reportable Substances for

Parts.

5.3 Additional Requirements to GMW3001.

5.3.1 Quality Requirements. The supplier shall

have quality process control procedures compliant

with ISO TS16949 or as required by GM Global

Purchasing and Supply Chain (GPSC)

demonstrating that the product will conform to all

specification requirements. The data required to be

submitted for this specification for each shipment

will be determined by the regional manufacturing

location.

5.4 Initial Source Approval. No shipments shall

be made by any supplier until Level 1 approval has

been obtained per GMW15420. Production

material shall not be shipped until Level 2 approval

been obtained per GMW15420. Initial Source

approval requirements are shown in Appendix B.

5.5 Safety Data Sheets. Completed copies of the

Materials Safety Data Sheets meeting GM

information requirements, consistent with

ISO 11014-1 standard shall be submitted with any

new material submissions or where a composition

change has occurred.

6 Approved Sources

Engineering qualifications of an approved source

are required for this standard. Only sources listed

in the GM Materials File (i.e., )

under this standard number have been qualified by

Engineering as meeting the requirements of this

standard.

For other GM locations, the responsible

Engineering group should be contacted to obtain

the approved source in that individual country.

7 Notes

7.1 Glossary. Not applicable.

7.2 Acronyms, Abbreviations, and Symbols.

AA Aluminum Association

ASTM ASTM International

GM WORLDWIDE ENGINEERING STANDARDS

GMW15935

February 2010

Page 3 of 9

CTS Component Technical Specification

EN European Standard

GMAP General Motors Asia Pacific

GME General Motors Europe

GMLAAM General Motors Latin America,

Africa, and Middle East

GMNA General Motors North America

GMW General Motors Worldwide

GPSC Global Purchasing and Supply Chain

ISO International Organization for

Standardization

JIS Japanese Industrial Standards

U Unexposed

VTS Vehicle Technical Specification

8 Coding System

This standard shall be referenced in other

documents, drawings, etc., as follows:

Material per GMW15935

The coding system for GMW aluminum heat

shields on engineering part drawings/electronic

math files, manufacturing engineering documents

and other documents (VTS, CTS, etc.) shall use a

nomenclature consisting of the GMW base metal

standard number, aluminum alloy designation,

temper designation, and dimpled or textured

surface dimensional designation.

8.2 Example of Manufacturing Engineering

Document Coding.

8.2.1 Example of coding for aluminum heat shield

with a customary as-rolled mill finish:

Where:

GMW15935M-AL-S-1000A-O

GMW15935 = GMW standard number

M = Metal

AL = Aluminum

S = Sheet

1000A = Alloy designation

O = Temper designation

Example of coding for aluminum heat shield with

dimpled or texture surface.

Where:

GMW15935M-AL-S-5000A-O-TEX A

GMW15935 = GMW standard number

M = Metal

AL = Aluminum

S = Sheet

5000A = Alloy designation

O = Temper designation

TEX A = Dimpled or textured surface dimension

type

9 Release and Revisions

9.1 Release. This standard originated in May

2008. It was first approved by the GM Global Non-

Ferrous Metals Team in February 2009. It was first

published in February 2009.

9.2 Revisions.

Rev

Approval

Date

Description (Organization)

FEB 2010

5000C added to Table A1.

5000C-O added to Table A3.

GMW15935M-AI-S-5000C

added to Tables A2, A6, and

A7. (Nonferrous Metallic

Materials GSSLT)

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标签： #金属材料 #材料规格 #金属

摘要：

本页面详细介绍通用公司标准 GMW 15935-2010，即针对热屏蔽应用用铝板的金属材料规格。该标准主要规范了用于汽车及其他热屏蔽场景的铝板材料的化学成分、力学性能、尺寸公差及表面质量要求，确保材料在高温环境下具备稳定的热反射性、抗腐蚀性和加工成型能力。GMW 15935-2010 适用于设计、采购及质量检验人员，为铝板选材提供权威技术依据，有助于提升热屏蔽组件的耐久性与整车热管理效能。符合该标准的铝板可广泛应用于发动机舱隔热罩、排气管护板及排气系统周边部件，有效降低热辐射对邻近零部件的热损伤

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