Pre-Coated or Uncoated Low Carbon, Heat-Treatable Boron Steel
预镀层或无镀层低碳可热处理硼钢
1 Scope适用范围
This specification covers the requirements for low carbon, heat-treatable boron steel ud in the manufacture of structural parts to manage very high tensile loads without significant deformation such as required in safety and occupant protection.
本规范涵盖了用于结构零件的低碳可热处理硼钢的要求，而这些零件应具有安全性和乘员保护性能，要求在没有明显变形的情况下，具有很高的强度。
This material is heat treated and then formed and simultaneously quenched in a water cooled die in a process referred to as hot stamping, hot press forming or press hardening.
这种材料用于热冲压（或称热成形、压淬成形）工艺，经过加热，然后在水冷模具中成形并淬火。
Material produced by this process generally referred to as press hardened steel(PHS).
用于这种工艺的材料一般称作热成形钢（PHS）。
This process results in a part with a microstructure consisting of esntially 100% tempered martensite or martensite with trace amounts of bainite.
通过这种工艺得到的零件的金相组织是100%的回火马氏体或者含有极少量贝氏体的马氏体组织。
Note: For bonded applications with pre-coated press hardened steel, the material shall meet additional coating adhesion requirements in 3.2.7 and adhesive compatibility requirements in 3.3.2
注：如果预镀层热成形钢需要用于胶接工艺，则材料应该满足3.2.7节镀层附着性的附加要求和3.3.2节胶粘剂适用性的要求。
1.1 Material Description. 材料说明。
The material designation is defined by the GMW material specification number, material category (Sheet or Tubular product), steel product type, grade, and finish type.
根据GMW材料规范定义了材料编号、材料类型（板材或管材）、板材类型、牌号和最终产品类型。
The substrates ud in the applications may be cold rolled or hot rolled, but the product type is designated as heat treated (HT) or hot stamped (HS), as appropriate.
born和borne的区别应用于热冲压的母材可以是冷轧或热轧的，但是产品类型根据情况不同定义为热处理（HT）或热冲压（HS）。The steel grades will correspond to the chemical and mechanical requirements as shown in Table 2 and Table A1 through Table A3.
钢的牌号对应于其化学性能和机械性能如表2和表A1至A3所示。
The surface quality, reprented as an alpha character, shall be designated with the surface quality.
首字母来表示产品表面质量。
Only the surface quality designation of U, reprenting an unexpod application, shall be ud unless otherwi approved by Materials Engineering.
除了材料工程师认可的其他情况外，只能使用表面质量定义为U的材料，U表示非暴露条件。
The above descriptive items are ud together to form the coding system.
编码系统是由上述描述性条款组成。
Examples of the coding system for engineering part drawings, electronic math data files and/or manufacturing engineering documents are shown in Section 8.
第8节介绍了工程零件图、数模文件和/或制造工程文件中编码系统应用实例。
1.1.1 Resistance Welded Mechanical Tubing. 电阻焊管。
Tubes supplied to this specification are roll formed from a steel strip to the desired shape and dimension, electrical resistance welded into a tube, and then heat treated to achieve the final mechanical property requirements.
本规范中的管件都是带钢通过滚压成形得到需要的形状和尺寸，电阻焊成圆管，然后热处理获得最终的机械性能。
1.1.2 Induction Heat Treated Steel. 电感应热处理钢。
Part ctions formed with this operation and supplied under this standard shall be made by stamping in the as-rolled condition. The raw stamping can be lectively coil induction hardened to achieve the required strength requirements. Al-Si, Zn, Zn-Fe, or Zn-Ni pre-coated products shall not be ud in the applications. 该零件制造方法是对轧制状态的料片进行冲压，有选择性地对零件的所需部位
进行电感线圈感应淬火，以获得需要的强度。但是该方法不适用于铝硅镀层、锌镀层、锌铁镀层和锌镍镀层产品。
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1.1.3 Hot-stamped Die-Quenched Steel. 冲压淬火钢。
Parts shall be made by austenitizing a pre-cut blank, hot stamping the heated blank and rapid cooling (quenching) the stamped part in the die or via water quenching.
将预先切好的料片加热达到奥氏体状态，然后进行热冲压，并在模具中快速冷却（淬火）或者水冷淬火得到最终零件。
Press hardened steel (PHS) can be formed by either direct or indirect stamping process.
热成形钢是通过直接或者间接冲压方法成形的。代表作英文>hamimelon
The direct process is considered as main-stream for all usages (except tubes).
直接方法被认为是主要的方法（除了管材）。
考满分
The indirect process is less common and more expensive since it requires two dies and is not compatible with common oven designs and press systems.
间接方法不常用，并且比较贵。这是因为它需要两副模具，而且与普通加热炉和压机系统也不匹配。
Note: Since the indirect stamping process is not globally available, the indirect process must not be ud (or parts designed to require its u) without the prior authorization of the Global Functional Lead (GFL).
提示：由于间接冲压方法没有全球化的应用，在得到GFL授权之前禁止使用（除非设计要求）。
U of the indirect process implies that effected part cannot be ud globally without driving excessive cost to ship stamped parts globally.欺负英文
间接方法的使用意味着如果不增加运输成本，相关的零件不能全球通用。
Exception: The indirect process is globally available and can be ud without prior approval only for tubular products such as axle tubes.
例外：对于管类零件如轴管，间接方法是全球应用的，对零件采用间接热冲压不需要经过授权。
1.1.3.1 Uncoated Products. 无镀层产品。
Parts formed with uncoated steel and supplied under this standard shall be subquently blasted to remove oxide from the surface as described in ction 3.3.3.2.
在本标准中，无镀层零件成形后必须经过喷丸处理，以去除其表面氧化物，详细描述见3.3.3.2。
1.1.3.2 Pre-Coated Products. 预镀层产品。
Parts formed with a hot stamping operation may also utilize pre-coated steels furnished according to this specification in order to eliminate the need for blasting and/or improve corrosion performance.哈尔滨派特森
在本标准中，由热冲压形成的零件也可以使用预镀层钢料，以省去喷丸工序或是提高防腐蚀性能。
Aluminum-Silicon (Al-Si) Pre-Coatings: Al-Si coated parts shall not be cold-stamped prior to the hot stamping operation, but slight roll-forming operations may be allowable if the coating is not damaged. Blasting is not permitted for Al-Si pre-coated parts to prevent damage of the coating.
铝-硅（Al-Si）预镀层：铝-硅镀层的零件在热冲压之前不允许进行冷冲压，但是在不破坏镀层的前提下，允许小变形量的滚压成形。Al-Si预镀层零件不允许喷丸处理，以免破坏镀层。
Zinc Bad Pre-Coatings. Parts are preferably stamped by the direct hot stamping process. After hot
forming and cooling, parts shall be blasted to remove any oxide layer from the surface as described in ction 3.3.3.2.
锌基预镀层：最好使用直接热冲压的方法冲压零件。在热冲压和冷却之后，零件必须经过喷丸处理，以去除其表面氧化物，详细描述见3.3.3.2节。
1.1.4 Material Call-Outs.材料命名。
The list of material and coating designations shown in Table 1 are the only approved material call-outs that can be relead unless Materials Engineering and the appropriate Global Subsystem Leadership Team approves.
只有表1所列的材料和镀层的名称是被认可并可以使用的。其它的材料名称需要得到材料工程师和相应的GSSLT的批准。
Table 1. Approved Material Call-Outs
表1. 认可的材料命名
1.2 Symbols. Not applicable.
符号。不适用。
1.3 Typical Applications.典型应用。
Typical applications are uncoated or pre-coated sheet metal stampings and thin gauge tubular structural parts requiring tensile strengths exceeding 1300 MPa and 500 MPa respectively. Typical applications include door impact beams, bumper impact beams, and structural reinforcements for side impact and roof strength.
典型应用为裸板或预镀层板冲压件和薄壁管结构零件，要求强度超过1300MPa和500MPa。典型应用包括车门防撞梁、保险杠防撞梁和碰撞结构的加强件。
1.4 Remarks. 注意。
See T able B1 in Appendix B for cross-referenced/ superded specifications.
详见相互参照/替代规范附录B中的表B1。
圣诞节快乐的英文2 References 参考
Note: Only the latest approved standards are applicable unless otherwi specified.
注释：无特殊情况，只可使用最新的标准。
2.1 External Standards/ Specification. 外部标准/规范。
ASTM A370 ASTM E1077 ISO 6892 JIS Z2201
ASTM A428 EN 10247 ISO 7438 SAE J419
ASTM A513 EN 10346 ISO 10275 SEP 1160
ASTM A751 ISO 898-1 ISO 18594
ASTM E45 ISO 4287 ISO/TS 16949女孩英文名
2.2 GM Standards/ Specifications. GM标准/规范
GMW 8 GMW 3335 GMW 14729 GMW 15282
GMW 3011 GMW 14019 GMW 14829 GMW 16549
GMW 3059 GMW 14700 GMW 14872 GMW 16579
GMW 3224 GMW 14704 GMW 15200
2.3 Additional References. 补充参考
∙ Best Practice BODYSTR-33. The supplier shall work with the GM responsible engineer to comprehend this requirement.
最好的练习BODYSTR-33。供应商应该协同GM的相关工程师一起理解遵守该要求。
∙ GWS-5A (available ).
GWS-5A（参考链接）
∙ Statement of Requirements (SOR) Appendix N.
要求清单（SOR）参考附录N
∙ TMC003 Material Safety Data Sheet guidance documents (available ).
TMC003材料安全数据表格指导文件。（参考链接）
3 Requirements 要求
The following ction defines specific requirements for material on delivery, processing, performance and other stages during life cycle. Deviations required for individual GM business units are listed in t
he Deviations at the end of this document.
对材料的运送、生产、性能和生命周期内的其它阶段，以下部分都有具体的要求。各地GM分公司允许的例外在文档最后的特殊情况部分列出。
Parts supplied according to this specification shall undergo successful trials that fully meet end product requirements. In the event of any changes to the heat treatment and/or manufacturing process to which the part was successfully validated, the appropriate engineering group must be notified and the part must be tested and re-qualified to the proper PPAP level as determined by GM.
供应商提供的部件必须根据本规范通过试验，满足成品要求。如果已经得到认证的热处理和（或）制造工艺有任何改变，必须通知相应的工程组，该部件也必须测试，重新获得GM PPAP的认证。
Hot stampers are required to maintain a consistent source of steel supply and to u GM approved suppliers listed in GM’s MATSPC system.
热成形零件供应商要保持其稳定的原材料来源，并且使用GM认可的供应商，这些供应商将会显示在GM的MATSPC系统中。
3.1 Requirements on Test Specimens. Not Applicable.
试验样本要求。不适用。
3.2. Engineering Requirements. 工程要求。
paceman怎么读3.2.1 Chemistry. 化学性质。
Ba metal composition bad on product (coil, or sheet/blanks) analysis determined per ASTM A751 shall conform to the requirements of Table 2 and/or shall be agreed upon between supplier and purchar. When end product (coil/blank) test results are not available, ladle analysis may be ud. Chemical composition on the end product is the referee method.
按照ASTM A751对产品（包卷材、片材）的基本金属成分进行分析，应符合表2中的要求，并且（或）供货商与采购者就此达成一致。如果不能获得最终产品（卷料或板料）的分析结果，可以使用钢包分析的结果。以最终产品的化学成分分为仲裁方法。
Table 2: Chemical Composition, Mass % note1
表2：化学成分，质量%注释1
Note 1: See T able D1 in the deviations ction for high hardenability alloy chemistry.
