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合金结构钢
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GBT 3077-2015
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标准编号: GB/T 3077-2015 (GB/T3077-2015)
中文名称: 合金结构钢
英文名称: Alloy structure steels
行业: 国家标准 (推荐)
中标分类: H40
国际标准分类: 77.140.60
字数估计: 28,212
发布日期: 2015-12-10
实施日期: 2016-11-01
旧标准 (被替代): GB/T 3077-1999
引用标准: GB/T 222; GB/T 223.4; GB/T 223.5; GB/T 223.9; GB/T 223.11; GB/T 223.13; GB/T 223.16; GB/T 223.18; GB/T 223.23; GB/T 223.26; GB/T 223.43; GB/T 223.49; GB/T 223.59; GB/T 223.60; GB/T 223.67; GB/T 223.69; GB/T 223.75; GB/T 224; GB/T 225; GB/T 226; GB/T 228.1; GB/T 229; GB/T 231.1
起草单位: 大冶特殊钢股份有限公司
归口单位: 全国钢标准化技术委员会
标准依据: 国家标准公告2015年第38号
提出机构: 国家钢铁工业协会
发布机构: 中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会
范围: 本标准规定了合金结构钢的分类与代号、订货内容、尺寸、外形、重量及允许偏差、技术要求、试验方法、检验规则、包装、标志和质量证明书。本标准适用于公称直径或厚度不大于250 mm的热轧和锻制合金结构钢棒材。经供需双方协商, 也可供应公称直径或厚度大于250 mm热轧和锻制合金结构钢棒材(以下简称钢棒)。本标准所规定牌号及化学成分亦适用于钢锭、钢坯及其制品。
GB/T 3077-2015: 合金结构钢
GB/T 3077-2015 英文名称: Alloy structure steels
1 范围
本标准规定了合金结构钢的分类与代号、订货内容、尺寸、外形、重量及允许偏差、技术要求、试验方
法、检验规则、包装、标志和质量证明书。
本标准适用于公称直径或厚度不大于250mm的热轧和锻制合金结构钢棒材。经供需双方协商,
也可供应公称直径或厚度大于250mm热轧和锻制合金结构钢棒材(以下简称钢棒)。
本标准所规定牌号及化学成分亦适用于钢锭、钢坯及其制品。
2 规范性引用文件
下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件,仅注日期的版本适用于本文
件。凡是不注日期的引用文件,其最新版本(包括所有的修改单)适用于本文件。
GB/T 222 钢的成品化学成分允许偏差
GB/T 223.4 钢铁及合金 锰含量的测定 电位滴定或可视滴定法
GB/T 223.5 钢铁 酸溶硅和全硅含量的测定 还原型硅钼酸盐分光光度法
GB/T 223.9 钢铁及合金 铝含量的测定 铬天青S分光光度法
GB/T 223.11 钢铁及合金 铬含量的测定 可视滴定或电位滴定法
GB/T 223.13 钢铁及合金化学分析方法 硫酸亚铁铵滴定法测定钒含量
GB/T 223.16 钢铁及合金化学分析方法 变色酸光度法测定钛量
GB/T 223.18 钢铁及合金化学分析方法 硫代硫酸钠分离-碘量法测定铜量
GB/T 223.23 钢铁及合金 镍含量的测定 丁二酮肟分光光度法
GB/T 223.26 钢铁及合金 钼含量的测定 硫氰酸盐分光光度法
GB/T 223.43 钢铁及合金 钨含量的测定 重量法和分光光度法
GB/T 223.49 钢铁及合金化学分析方法 萃取分离-偶氮氯膦mA光度法测定稀土总量
GB/T 223.59 钢铁及合金 磷含量的测定 铋磷钼蓝分光光度法和锑磷钼蓝分光光度法
GB/T 223.60 钢铁及合金化学分析方法高氯酸脱水重量法测定硅含量
GB/T 223.67 钢铁及合金 硫含量的测定 次甲基蓝分光光度法
GB/T 223.69 钢铁及合金 碳含量的测定 管式炉内燃烧后气体容量法
GB/T 223.75 钢铁及合金 硼含量的测定 甲醇蒸馏-姜黄素光度法
GB/T 224 钢的脱碳层深度测定法
GB/T 225 钢淬透性的末端淬火试验方法(Jominy试验)
GB/T 226 钢的低倍组织及缺陷酸蚀检验法
GB/T 228.1 金属材料 拉伸试验 第1部分:室温试验方法
GB/T 229 金属材料 夏比摆锤冲击试验方法
GB/T 231.1 金属材料 布氏硬度试验 第1部分:试验方法
GB/T 702 热轧钢棒尺寸、外形、重量及允许偏差
GB/T 908 锻制钢棒尺寸、外形、重量及允许偏差
GB/T 1979 结构钢低倍组织缺陷评级图
GB/T 2101 型钢验收、包装、标志及质量证明书的一般规定
GB/T 2975 钢及钢产品力学性能试验取样位置及试样制备
GB/T 4162 锻轧钢棒超声检测方法
GB/T 4336 碳素钢和中低合金钢火花源原子发射光谱分析方法(常规法)
GB/T 6394 金属平均晶粒度测定法
GB/T 6402 钢锻件超声检测方法
GB/T 7736 钢的低倍缺陷超声波检验法
GB/T 8170-2008 数值修约规则与极限数值的表示和判定
GB/T 10561 钢中非金属夹杂物含量的测定标准评级图显微检验法
GB/T 11261 钢铁 氧含量的测定 脉冲加热惰气熔融-红外线吸收法
GB/T 13298 金属显微组织检验方法
GB/T 13299 钢的显微组织评定方法
GB/T 15711 钢棒塔形发纹酸浸检验方法
GB/T 17505 钢及钢产品交货一般技术要求
GB/T 20066 钢和铁 化学成分测定用试样的取样和制样方法
GB/T 20123 钢铁 总碳硫含量的测定高频感应炉燃烧后红外吸收法(常规方法)
GB/T 20124 钢铁 氮含量的测定惰性气体熔融热导法(常规方法)
GB/T 21834 中低合金钢多元素成分分布的测定金属原位统计分布分析法
GB/T 28300 热轧棒材和盘条表面质量等级交货技术条件
YB/T 4306 钢铁及合金氮含量的测定惰性气体熔融热导法
YB/T 5293 金属材料 顶锻试验方法
3 分类与代号
3.1 钢棒按冶金质量分为下列三类:
a) 优质钢;
b) 高级优质钢(牌号后加“A”);
c) 特级优质钢(牌号后加“E”)。
3.2 钢棒按使用加工方法分下列两类:
a) 压力加工用钢 UP;
1) 热压力加工 UHP;
2) 顶锻用钢 UF;
3) 冷拔坯料 UCD;
b) 切削加工用钢 UC。
3.3 钢棒按表面种类分为下列五类:
a) 压力加工表面 SPP;
b) 酸洗 SA;
c) 喷丸(砂) SS;
d) 剥皮 SF;
e) 磨光 SP。
4 订货内容
按本标准订货的合同或订单应包括下列内容:
a) 标准编号;
b) 产品名称;
c) 牌号或统一数字代号;
e) 交货的重量(或数量);
f) 尺寸、外形及其允许偏差;
g) 使用加工方法(未注明者,按切削加工用钢);
h) 热处理交货或特殊表面状态交货(如有要求,见6.3.2和6.3.3);
i) 热顶锻(如有要求,见6.5);
j) 脱碳层(如有要求,见6.9);
k) 特殊要求(如有要求,见6.11)。
5 尺寸、外形、重量及允许偏差
5.1 热轧钢棒的尺寸、外形、重量及其允许偏差应符合GB/T 702的有关规定,具体要求应在合同中
5.2 热锻钢棒的尺寸、外形、重量及其允许偏差应符合GB/T 908的有关规定,具体要求应在合同中
注明。
5.3 其他尺寸钢棒的尺寸、外形、重量及其允许偏差应符合相应标准或经供需双方协商确定,具体要求
在合同中注明。
6 技术要求
6.1 牌号及化学成分
6.1.1 钢的牌号、统一数字代号及化学成分(熔炼分析)应符合表1的规定。
6.1.2 钢中硫、磷及残余元素含量应符合表2的规定。
6.1.3 钢棒(或坯)的成品化学成分允许偏差应符合GB/T 222的规定。
钢棒的检验项目和试验方法见表8。
8 检验规则
8.1 检查和验收
8.1.1 钢棒出厂的检查和验收由供方质量部门进行。
8.1.2 供方必须保证交货的钢棒符合本标准或合同的规定,必要时,需方有权对本标准或合同所规定
的任一检验项目进行检查和验收。
8.2 组批规则
8.2.1 钢棒应按批检查和验收,每批由同一牌号、同一炉号、同一加工方法、同一尺寸、同一交货状态、同一热处理制度(或炉次)的钢棒组成。
8.2.2 采用电渣重熔冶炼的钢,在工艺稳定且能保证本标准各项要求的条件下,允许以自耗电极的熔
8.3 取样数量及取样部位
每批钢棒的取样数量及取样部位应符合表8的规定。
8.4 复验与判定规则
8.4.1 钢棒的复验与判定规则按GB/T 17505规定执行。
8.4.2 供方若能保证钢棒合格时,对同一炉号的钢棒或钢坯的力学性能、低倍组织、非金属夹杂物的检
验结果,允许以坯代材,以大代小。
8.4.3 钢棒的检测和检验结果应采用修约值比较法修约到与规定值本位数字所标识的数位相一致,其
修约规则应符合 GB/T 8170-2008第3章的规定。
9 包装、标志和质量证明书
GB/T 3077-2015
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.60
H 40
Replacing GB/T 3077-1999
Alloy Structure Steels
ISSUED ON. DECEMBER 10, 2015
IMPLEMENTED ON. NOVEMBER 1, 2016
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Classification and code ... 8
4 Ordering content ... 9
5 Size, shape, weight and tolerance ... 9
6 Technical requirements ... 10
7 Test methods ... 28
8 Inspection rules ... 29
9 Packaging, marking and quality certificate ... 30
APPENDIX A ... 31
Foreword
This Standard is drafted in accordance with the rules specified by GB/T 1.1-
2009.
This Standard replaces GB/T 3077-1999 "alloy structure steel".
Compared with GB/T 3077-1999, the main technical changes of this Standard
are as follows.
- MODIFY the classification requirements based on metallurgical quality (see
Table 2, Table 4,6.7 and 6.8 of this version; Table 2 and Table 4 of 1999
version);
- ADJUST the lower limit of boron steel’s B content from 0.0005% to 0.0008%
(see Table 1 of this version);
- DELETE all designations with letter "A"; however, the chemical composition
of same designation is adjusted to the chemical composition of the original
designation with letter A (see Table 1 of this version; Table 1 of 1999
version);
- ADD 12 designations and related technical requirements, such as 25MnB,
35MnB, 25CrMo, 50CrMo, 34CrNi2,15CrNiMo, 30CrNiMo, 30Cr2Ni2Mo,
30Cr2Ni4Mo, 34Cr2Ni2Mo, 35Cr2Ni4Mo, 40CrNi2Mo (see Table 1 and
Table 3 of this version; Tables 1 and 3 of 1999 version);
- ADJUST the sulfur and phosphorus content of steel (Table 2 of this version;
Table 2 of 1999 version);
- SUBDIVIDE the surface defects into defect and deficiency (see 6.10 of this
version; 6.6 of 1999 version);
- MODIFY the surface quality description, and INCLUDE GB/T 28300
standard specifications (see 6.10 of this version; 6.6 of 1999 version);
- MODIFY the "nonmetallic inclusion" requirements (see 6.7 of this version;
6.9 of 1999 version);
- ADD "grain size" requirements (see 6.8 of this version);
- MODIFY "special requirements" (see 6.11 of this version; 6.10 of 1999
version);
- ADD the numerical rounding requirements (see 7.2 of this version);
- ADD the comparison table of this Standard’s designations and foreign
Alloy Structure Steels
1 Scope
This Standard specifies the classification and code, order content, size, shape,
weight and allowable tolerance, technical requirements, test method, inspection
rules, packaging, marking and quality certificate of alloy structure steel.
This Standard applies to the hot-rolled and forged alloy steel bars which are not
more than 250mm of nominal diameter or thickness. However, after negotiated
by the Supplier and Demander, it is also allowed to supply hot-rolled and forged
alloy steel bars which are more than 250mm of nominal diameter or thickness
(abbreviated as the steel bar).
The designations and chemical compositions which are specified in this
Standard are also applicable to steel ingot, billet and their products.
2 Normative references
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this Standard.
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223.4 Alloyed steel - Determination of manganese content -
Potentiometric or visual titration method
GB/T 223.5 Steel and iron - Determination of acid-soluble silicon and total
silicon content - Reduced molybdosilicate spectrophotometric method
GB/T 223.9 Iron, steel and alloy - Determination of aluminum content -
GB/T 223.11 Iron, steel and alloy - Determination of chromium content -
Visual titration or potentiometric titration method
GB/T 223.13 Methods for chemical analysis of iron, steel and alloy - The
ammonium ferrous sulfate titration method for the determination of vanadium
content
GB/T 223.16 Methods for chemical analysis of iron, steel and alloy - The
chromotropic acid photometric method for the determination of titanium
content
GB/T 223.18 Methods for chemical analysis of iron, steel and alloy - The
copper content
GB/T 223.23 Iron, steel and alloy - Determination of nickel content - The
dimethylglyoxime spectrophotometric method
GB/T 223.26 Iron, steel and alloy - Determination of molybdenum content -
The thiocyanate spectrophotometric method
GB/T 223.43 Iron, steel and alloy - Determination of tungsten content -
Gravimetric method and spectrophotometric method
GB/T 223.49 Methods for chemical analysis of iron, steel and alloy -
Extraction separation - Chlorophosphonazo mA spectrophotometric method
GB/T 223.59 Iron, steel and alloy - Determination of phosphorus content -
Bismuth phosphomolybdate blue spectrophotometric method and antimony
phosphomolybdate blue spectrophotometric method
GB/T 223.60 Methods for chemical analysis of iron, steel and alloy - The
perchloric acid dehydration gravimetric method for the determination of
silicon content
GB/T 223.67 Iron, steel and alloy - Determination of sulfur content -
Methylene blue spectrophotometric method
GB/T 223.69 Iron, steel and alloy - Determination of carbon contents - Gas-
GB/T 223.75 Iron, steel and alloy - Determination of boron content - Methanol
distillation-curcumin photometric method
GB/T 224 Determination of depth of decarburization of steels
GB/T 225 Steel - Hardenability test by end quenching (Jominy test)
GB/T 226 Test method for macrostructure and defect of steel by etching
GB/T 228.1 Metallic materials - Tensile testing - Part 1. Method of test at
room temperature
GB/T 229 Metallic materials - Charpy notch impact test
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1. Test method
GB/T 908 Forged bars - Dimensions, shape, weight and tolerance
GB/T 1979 STANDARD diagrams for macrostructure and defect of structural
steels
GB/T 2101 General requirement of acceptance packaging marking and
certification for section steel
GB/T 2975 Steel and steel products - Location and preparation of test pieces
for mechanical testing
GB/T 4162 Forged and rolled steel bars - Method for ultrasonic testing
GB/T 4336 Standard test method for spark discharge atomic emission
GB/T 6394 Metal - Methods for estimating the average grain size
GB/T 6402 Steel forgings - Method for ultrasonic testing
GB/T 7736 Ultrasonic inspecting method for macro-structure and
imperfection of steel
GB/T 8170-2008 Rules of rounding off for numerical values & expression and
judgment of limiting values
GB/T 10561 Steel - Determination of content of nonmetallic inclusions -
Micrographic method using standards diagrams
GB/T 11261 Steel and iron - Determination of oxygen content - The pulse
GB/T 13298 Inspection methods of microstructure for metals
GB/T 13299 Steel - Determination of microstructure
GB/T 15711 Steel products - Method for etch test of tower sample
GB/T 17505 Steel and steel products - General technical delivery
requirements
GB/T 20066 Steel and iron - Sampling and preparation of samples for the
determination of chemical composition
GB/T 20123 Steel and iron - Determination of total carbon and sulfur content
infrared absorption method after combustion in an induction furnace (routine
GB/T 20124 Steel and iron - Determination of nitrogen content - Thermal
conductimetric method after fusion in a current of inert gas
GB/T 21834 Medium and low alloy steel - Determination of the distribution of
multi-element contents - Original position statistic distribution analysis
method
GB/T 28300 Surface quality classes for hot-rolled bars and rods technical
delivery conditions
YB/T 4306 Steel, iron and alloy - Determination of nitrogen content - Thermal
conductimetric method after fusion in a current of inert gas
3 Classification and code
3.1 Based on metallurgical quality, the steel bar is divided into the following
three categories.
a) Quality steel;
b) Advanced-quality steel (ADD "A" after designation);
c) Excellent-quality steel (ADD "E" after designation).
3.2 Based on application and processing method, the steel bar is divided into
the foll...
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