美国牌号为灰铸铁的标准是ASTM A48/A48M，其中等级（Class）为NO.40的灰铸铁相当于中国的HT250和HT300之间。参考资料：《ASTM A48/A48M-00》；《金属材料及制品中外牌号对照》
ASTM A48 Class 40 (Related Standards – ISO 185/JL/275, SAE J431 G4000, EN-GJL-250 or 300) is a gray cast iron with a pearlitic microstructure.Gray irons are classified into groups based on their tensile strength. For example, Class 40 requires a minimum tensile strength of 40 ksi. ...
astm a48 下载积分: 1600 内容提示: Designation: A 48/A 48M – 03Standard Specification forGray Iron Castings1This standard is issued under the fixed designation A 48/A 48M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the...
标准：ASTM A48-19 A48M gb/T 1221-92 耐热钢棒 等级 ASTM A48 Class 30 Class 30B Class 35 Class 20 Class 25 Class 40 Class 45 Class 50 A B C S 化学成分：拉力板 拉力棒 低合金钢 锅炉板 进口高碳钢六角钢 ASTM A48 碳素钢 碳钢 低碳钢 碳素结构钢 碳结钢 合金结构钢 ASTM A48 ASTM ...
CLASS NO. 50A 50B 50C 50S CLASS NO. 35A 35B 35C 35S CLASS NO. 40A 40B 40C 40S CLASS NO. 55A 55B 55C 55S CLASS NO. 60A 60B 60C 60S 标准: ASTM A48 A48M-2003 化学成分:(以茂辰材质书为准) ASTM-A48-A48M钢卷 卷带 铸造铁 热板 ...
Examples of proper designations are as follows:Gray Iron Castings, ASTM Specification A48, Class 30B.Gray Iron Castings, ASTM Specification A48, Class 40C.5. Ordering Information5.1 Orders for material to this specification shall include thefollowing information:5.1.1 ASTM designation number and year...
ASTM A48 A48M-03
钢号:ASTM A48 灰口铸铁 铸铁棒 铸铁板 标准:ASTM A48-19 A48M gb/T 1221-92 耐热钢棒 等级ASTM A48 Class 30 Class 30B Class 35 Class 20 Class 25 Class 40 Class 45 Class 50 A B C S 化学成分: 拉力板 拉力棒 低合金钢锅炉板 进口高碳钢六角钢 ASTM A48 ...
Gray Iron Castings, ASTM Specication A 48, Class 40C. 5. Ordering Information 5.1 Orders for material to this specication shall include the following information: 5.1.1 ASTM designation number and year of issue, 5.1.2 Class of iron required (see 4.1, Table 1, and Table 2), 5.1.3 The...
CLASS NO. 40A 40B 40C 40S CLASS NO. 45A 45B 45C 45S CLASS NO. 50A 50B 50C 50S CLASS NO. 55A 55B 55C 55S CLASS NO. 60A 60B 60C 60S 标准: ASTM A48 A48M-2003 化学成分:(以茂辰材质书为准) ASTM-A48-A48M钢卷 卷带 铸造铁 ...