通用公司标准GMW 15619-2009 金属材料规范-由钢板制造的轧制成型坯料和管材

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WORLDWIDE

ENGINEERING

STANDARDS

Material Specification

Metals

GMW15619

Tailor Rolled Blanks and Tubes Fabricated from Sheet Steel

January 2009

Originating Department: North American Engineering Standards

Page 1 of 9

1 Scope

This standard defines the requirements for Tailor

Rolled Blanks (TRB) and Tailor Rolled Tubes

(TRT) used in the manufacture of steel body

structure parts. Tailor rolled blanks shall be

produced from continuous cast hot or cold rolled

coils/strip (usually supplied in thicknesses

>1.75 mm) that are cold rolled to specific multiple

thicknesses, annealed or as-rolled, and galvanized

(if applicable), and then leveled and cut to

specified blank sizes. Tailor rolled blank products

shall be used for cold formed stampings and hot

formed stampings. Tailor rolled tubes shall be

manufactured from tailor rolled blanks that are

formed into circular tubes along the longitudinal

direction and joined by a laser welded seam.

1.1 Material Description. The material

designation is defined by the tailor rolled segment

thickness, GMW base metal specification number,

steel product type, minimum yield strength,

minimum tensile strength, galvanized coating type,

and the finish type. The steel product type is

designated by Cold Rolled (CR) for cold rolled

products. GMW2 low carbon and GMW3032 high

strength steel grades shall be specified by the steel

type and a three digit numeral to designate the

minimum yield strength of each tailor rolled

segment in megapascals (MPa). The minimum

yield strength, minimum ultimate tensile strength,

and minimum total elongation shall be established

by statistical analysis of tensile test results of TRB

or TRT samples. A designation of steel type shall

be added to solid solution strengthened grades (P

and IF) and high strength Low Alloy (LA) steels. An

F designation may be added following an LA steel

type to specify the steel as inclusion controlled.

Bake hardenable (B0 and B2) steel grades are not

applicable to tailor rolled blanks. The steel grades

will correspond to the chemical composition

requirements of the applicable tables of GMW2

and GMW3032. The galvanized coating type shall

be specified by the Electrogalvanized Coating for

(EG), or Hot Dip (HD) for galvanized coating

followed by the minimum coating weight per sheet

side. The finish type, an alpha character, will

designate the finish as either Exposed (E), Semi-

Exposed (Z), or Unexposed (U). Products without a

coating (i.e., bare steel) shall have the word

“UNCOATED” added to the call out after the steel

type, but before the finish designation.

Electrogalvanized coatings shall conform to the

requirements of GMW11. Hot dip galvanized

coatings shall conform to the requirements of

GMW8. Tailor Rolled Blanks produced from low

carbon boron alloy steel substrates for hot

stamping applications shall conform to GMW14400

uncoated or aluminized coated requirements. The

above descriptive items are used together to form

the coding system. Examples of the coding system

for engineering part drawings and manufacturing

engineering documents are shown in Section 8.

1.2 Symbols. Not applicable.

1.3 Typical Applications. Typical applications for

tailor rolled blanks include (but not limited to) body

structure panels such as roof bows, cross sills,

rocker panels, cross members, tunnel

reinforcements, radiator support assembly tie bars,

and B-pillars. Tubular applications include

instrument panel cross car beams.

2 References

Note: Only the latest approved standards are

applicable unless otherwise specified.

2.1 External Standards/Specifications.

ASTM E8

ISO 10275

ASTM E517

ISO 13919-1

ASTM E646

ISO/TS 16949

ISO 10113

2.2 GM Standards/Specifications.

GM6180M

GMW3059

GMW2

GMW3224

GMW8

GMW14019

GMW11

GMW14400

GMW3001

GMW14699

GMW3032

2.3 Additional References.

Material Part Specification (MPS) sheets.

GMW15619

GM WORLDWIDE ENGINEERING STANDARDS

Page 2 of 9

January 2009

3 Requirements

3.1 Tailor Rolled Blank Requirements on

Delivery.

3.1.1 Chemical Requirements. Chemical

composition of tailor rolled blanks and tubes shall

meet the requirements of the applicable GMW2,

GMW3032, or GMW14400 steel grade.

3.1.2 Mechanical Requirements. The mechanical

property requirements of tailor rolled blanks and

tubes shall be established based on statistical

analysis of tensile test results from production

representative samples. Refer to Material

Qualification Requirements in Appendix B.

3.1.3 Blank Thickness and Dimensional

Requirements. The tailor rolled segments of tailor

rolled blanks shall conform to cold rolled nominal

thickness and thickness tolerance requirements as

described in GMW3224, not exceeding tolerances

tighter than ± 0.05 mm. Thickness and thickness

tolerances shall be specified by the detailed

engineering math data. In most cases, this

information can also be found on the detailed MPS

sheets issued by GM Body Manufacturing

Engineering.

3.1.4 Maximum Thickness Reduction. The

maximum thickness reduction of tailor rolled blanks

manufactured from hot rolled coils/strip shall be

65% maximum. Lower thickness reductions may

apply due to material strength and blank

development.

3.1.5 Maximum Widths. The current maximum

width of tailor rolled blanks is 750 mm.

3.1.6 Blank Length and Width Tolerances.

Unless otherwise specified by the Geometric

Dimensioning & Tolerancing (GD&T) datum

locating scheme, the permissible tolerances for

blank length is ± 2.0 mm. Blank width tolerance is

± 1.0 mm.

3.1.7 Minimum and Maximum Thickness to

Length Change (Slope) of Transition Areas. The

typical maximum thickness to length change

(slope) within transition areas shall not be more

than 1 mm/100 mm of length.

3.1.8 Blank Edge Preparation. Maximum

allowable burr on any edge shall be no >10% metal

thickness.

3.1.9 Surface Quality. Processing shall be

controlled such that the surface quality of the tailor

rolled blank meets the requirements of GM6180M

for the specified surface type.

3.1.10 Dimensions and Tolerances of the Blank

Stack. The blanks shall be stacked so that each

stack is identical in shape with the edges flush.

The dimensions and tolerances for the stacks are

as follows:

3.1.11 Stack Shift, Blank Stagger, and Stack

Lean Tolerances. Permissible tolerances for these

requirements are 26 mm (Figures A1, A2, and A3).

3.1.12 Flatness of a Stack. Unless otherwise

noted, the allowable variation in distance from the

top of the stack to the ground at any point in the

plan view of the stack will be agreed upon by the

supplier and GM Worldwide Purchasing (WWP)

Steel Supplier Quality. If necessary, dimples may

be added to the stack to maintain the flatness of

the stack. Recommended dimensions for the

dimples will be found in Figures A4, A5, A6, and

A7. The location of the dimples will be found on the

MPS sheet. Dimples should either be staggered, or

put on every other blank in a stack. The parallelism

shall not be obtained by additional devices (e.g.,

wooden wedges or blocks).

3.2 Tailor Rolled Tube Requirements on

Delivery.

3.2.1 Manufacturing Description. Tailor rolled

tubes shall be manufactured from tailor rolled

blanks that are formed into circular tubes along the

longitudinal direction and joined by laser weld

seam to create a butt joint. The laser weld butt joint

shall meet the requirements of ISO 13919-1

Quality Level C (Medium).

3.2.2 Tube Thickness and Dimensional

Requirements. Wall thickness tolerances for tailor

rolled tubes shall be ± 0.1 mm. Tube dimensional

requirements such as length, squareness of cut,

straightness and ovality, shall be shown in the

electronic math data file or engineering part

drawing. Wall thickness tolerances of ± 0.2 mm is

allowed ± 20 mm either side from laser weld seam.

3.3 Additional Requirements.

3.3.1 Lubrication. Tailor rolled blanks and tubes

shall be lubricated as specified on the MPS sheet

to conform to GMW14019 for mill oils and pre-

lubes, to prevent rust. The tailor rolled blanks shall

have a sufficient amount of oil coverage in the

finished state to provide rust protection and the

needed lubricity for the forming of the part.

3.3.2 Process Control. The supplier shall develop

quality process control procedures compliant with

ISO/TS 16949 demonstrating that the product will

conform to all specification requirements listed in

this document. This shall include a statistically-

based sampling plan based upon product quality

performance. The data required to be submitted for

this specification for each shipment will be

determined by the manufacturing location.

GM WORLDWIDE ENGINEERING STANDARDS

GMW15619

January 2009

Page 3 of 9

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.

6 Approved Sources

Engineering qualifications of an approved source

are required for this standard. Only sources listed

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

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.

CR Cold Rolled

E Exposed

EG Electrogalvanized

GD&T Geometric Dimensioning & Tolerancing

GPSC Global Purchasing and Supply Chain

HD Hot Dip

LA Low Alloy

MPa Megapascals

MPS Material Part Specification

TRB Tailor Rolled Blanks

TRT Tailor Rolled Tubes

U Unexposed

WWP Worldwide Purchasing

Z Semi-Exposed

8 Coding System

This standard shall be referenced in other

documents, drawings, etc., as follows:

Material per GMW15619

This nomenclature specifies the thickness and

mechanical properties of each tailor rolled segment

in the longitudinal direction from the left edge (tail

of blank) to the right edge (head of blank) of the

tailor rolled blank (Figure A8). The coding system

shall consist of the applicable tailor rolled segment

thicknesses, the GMW Tailor Rolled Blank - Tailor

Rolled Tube specification number, steel product

type, minimum yield strength of each individual

tailor rolled segment, coating designation (if

applicable) and surface quality. A single steel

grade designation indicates that the steel grade is

constant along all tailor rolled segments in a given

blank. Multiple steel grade designations indicate

that the steel grade varies along tailor rolled

segments in a given blank. If the steel is to be

inclusion-controlled, an F may be included

following the steel type. The surface quality is

designated as U for Unexposed applications. For

coated applications, refer to GMW8 for hot dip zinc

coatings and GMW11 for electrogalvanized

coatings. This TRB-TRT specification shall be

called out on engineering drawings, electronic

math data files, manufacturing engineering

documents, and Global Purchasing and Supply

Chain (GPSC) purchasing document as shown in

the following examples:

8.1 Example of coding for uncoated low carbon

steel tailor rolled blank with constant yield strength

tailor rolled segments:

 1.20-1.00-1.10 GMW15619M-ST-S CRXXX

UNCOATED U

Where:

1.20-1.00-1.10

Tailor Rolled Segment

Thicknesses

GMW

Validation Area (GM Worldwide)

15619

Sequential number

Material Type: Metals

Category: Steel

Subcategory: Sheet

CRXXX

Steel Product Type: Cold Rolled

and minimum yield strength

(XXX)

UNCOATED

Uncoated Substrate Designation

Surface Quality

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标签： #金属材料 #钢 #钢板

摘要：

本页面详细介绍通用公司标准GMW 15619-2009，该标准为金属材料规范，专门针对由钢板制造的轧制成型坯料和管材。该标准涵盖了材料成分、力学性能、工艺要求及质量控制等核心内容，适用于汽车制造及相关工业领域，确保轧制成型产品的可靠性、一致性和耐久性。通过引用该标准，工程师和采购人员可以准确识别符合要求的钢板原料及成型工艺，有效提升零部件生产中的材料选用效率与合规性。无论您是从事金属材料研发、质量控制还是供应链管理，本规范都将为您提供权威的技术参考和实操指导。

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