Pregunta 2. VW 50065 -2013-07-(Flat Products Steel-For Cold Working-CR HR-Coats)

VW 50065

Group standard

Issue 2013-07 Class. No.:

51251

Descriptors:

steel, strip, sheet metal, flat product, body, cold-rolled, hot-rolled, steel for deep drawing, soft steel, high-strength steel, multiphase steel, zinc-coated, hot-dip galvanized, electrolytically zinc-coated, global, VDA 239-100

Flat Products Made of Steel for Cold Working Material Requirements Preface For new designs, global standard VW 50065 for sheet steel must be used for sheet steel in agree‐ ment with the appropriate departments. This version of the standard is based on VDA Material Sheet 239-100 "Sheet Steel for Cold Form‐ ing". Deviations of this standard from VDA 239-100 and the correspondence of codes between standards are listed in appendix B. The DIN EN and Volkswagen standards (VW and TL) used for flat steel products up to now still apply. Contents 1 2 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14

Page

Scope ......................................................................................................................... 2 Symbols and abbreviations ........................................................................................ 2 Material types and definitions ..................................................................................... 3 Soft steels .................................................................................................................. 3 Low-alloy and micro-alloyed steels (LA or HSLA) ...................................................... 3 Fine-grained steels (MC) ............................................................................................ 3 High-strength IF steels (IF) ........................................................................................ 3 Bake-hardening steels (BH) ....................................................................................... 3 Phosphorus-alloy steels (P) ....................................................................................... 4 Dual-phase steels (DP) .............................................................................................. 4 TRIP steels ................................................................................................................. 4 Complex-phase steels (CP) ....................................................................................... 4 Ferritic-bainitic steels (FB) ......................................................................................... 4 Martensitic steels (MS) ............................................................................................... 4 Electrolytic galvanization (EG) ................................................................................... 4 Hot-dip zinc coating (hot-dip galvanizing, GI) ............................................................ 5 Hot-dip zinc-iron alloy coating (galvannealed, GA) .................................................... 5

Always use the latest version of this standard. This electronically generated standard is authentic and valid without signature. The English translation is believed to be accurate. In case of discrepancies, the German version is alone authoritative and controlling. Numerical notation acc. to ISO/IEC Directives, Part 2.

Technical responsibility GQL-M/1

Dr. Carsten Lachmann

GQL-M

Dr. Frank Roeper

Page 1 of 34

The Standards department Tel.: +49 5361 9-33994

EKDV/4 Ute Hager-Süß

EKDV

Tel.: +49 5361 9-49035

Manfred Terlinden

All rights reserved. No part of this document may be provided to third parties or reproduced without the prior consent of one of the Volkswagen Group’s Standards departments.

© Volkswagen Aktiengesellschaft

VWNORM-2012-05q

Page 2 VW 50065: 2013-07

3.15 3.16 4 4.1 4.2 4.3 4.4 5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 6 6.1 6.2 6.3 7 8 9 Appendix A A.1 Appendix B B.1 B.2 Appendix C C.1 1

Hot-dip aluminum-silicon coating (AS) ....................................................................... 5 Hot-dip zinc-magnesium coating (ZM) ....................................................................... 5 Description ................................................................................................................. 5 Soft steels .................................................................................................................. 5 High-strength steels ................................................................................................... 6 Multiphase steels ....................................................................................................... 6 Coating and surface type ........................................................................................... 7 Requirements ............................................................................................................. 8 Basic and additional requirements ............................................................................. 8 Steelmaking method and deoxidation type of the steel .............................................. 8 Delivery ...................................................................................................................... 8 Limit deviations and form tolerances .......................................................................... 8 Chemical composition ................................................................................................ 8 Mechanical properties ................................................................................................ 8 Microstructure ............................................................................................................ 9 Coatings ................................................................................................................... 10 Surface ..................................................................................................................... 11 Processing instructions for joining multiphase steels (AHSS) .................................. 12 Welding .................................................................................................................... 12 MIG and laser brazing .............................................................................................. 12 Bonding .................................................................................................................... 13 Test certificates ........................................................................................................ 13 Marking, packaging, and storage life ....................................................................... 13 Applicable documents .............................................................................................. 13 .................................................................................................................................. 15 Tables ...................................................................................................................... 15 .................................................................................................................................. 26 Deviations from VDA Material Sheet 239-100 ......................................................... 26 Correspondence of codes between standards (informative) .................................... 26 .................................................................................................................................. 34 Description examples ............................................................................................... 34

Scope

This standard describes the requirements for uncoated and continuously coated, surface-treated, cold-rolled and hot-rolled flat products made of steel up to a thickness of 6,5 mm. Typical applica‐ tions are cold-worked sheet-steel components. 2 (HS)LA A A50 mm A80 mm AHSS Ag BH2 HSS IF

Symbols and abbreviations "High-Strength Low-Alloy", high-strength low-alloy or micro-alloyed steel with defined minimum yield point Elongation at break for a proportional specimen with L0 = 5,65 √So Elongation at break for a specimen with gage length L0 = 50 mm Elongation at break for a specimen with gage length L0 = 80 mm "Advanced High Strength Steel", multiphase steels Plastic extensometer elongation at maximum force Bake hardening value after 2% plastic prestrain "High-Strength Steel" with defined minimum yield point "Interstitial-free" steel

Page 3 VW 50065: 2013-07

MC RPc Ra ReL Rm Rp0,2 n10 – 20/Ag

Fine-grained steels Number of peaks Arithmetic average roughness Lower yield point Tensile strength Proof stress at 0,2% plastic elongation Tensile-strain-hardening exponent, determined between 10% and 20% plastic elongation or Ag for Ag