STRUCTURALSTEELSSABS1431南非国家标准1431结构钢

1、structural steels 结构钢sabs 1431 technical data sabs 1431技术数据application 应用these ranges of steel grades are intended for structural work where no significant forming or bending has to be done.the steel grade selected should be in accordance with its strength requirements as indicated in table 3.这些钢的等级

2、范围为钢结构提供使用，这种钢结构没有主要结构或不承担主要结构。钢的等级将以表3中提出的强度要求选择。steel grades 钢的等级the following steel grades to sabs 1431:1987 are produced. 下面钢的等级是按照南非国家标准(sabs )1431:1987要求生产的。- grade 240 wa 240 wc 240 wdd* 等级 240 wa 240 wc 240 wdd*- grade 300 wa 300 wc 300 wdd*等级 300 wa 300 wc 300 wdd*- grade 350 wa 350 wc 350

3、wdd*等级 350 wa 350 wc 350 wdd*等级* available only as plate mill products. 只适用于轧板机产品。as can be seen from table 3, the mechanical strength properties are the same throughout a grade range but the impact test requirements differ according to the prescribed test temperatures as indicated by the suffix per

4、 grade designation. 从表3中看出，全部等级的机械力学性质都是相同的，但是撞击试验要求按照每个等级名称下标规定的试验温度进行。在全部应用案例中所有规格样品在轴向平均撞击能量值必须达到27 j。steelmaking 钢生产南非国家标准1431的全部等级的钢按照硅脱氧钢要求正常生产，也按照标准铝处理，实际保证精细颗粒结构要求。供应条件适用于表1中显示的每个钢的等级。plate and sheet 金属板和薄板薄板产品厚度低于4.5 mm，金属板产品厚度大于等于4.5 mm。薄板和金属板应用不同外观尺寸公差。不超过13 mm厚和1850 mm宽（需要整齐边时）的产品在热钢带轧机上

5、正常生产。chemical composition 化学成分表1按照南非国家标准1431, 1987 (已修正)表2规定给出数值。限制范围很宽，提供钢铁生产商最大范围，用他们的生产设备生产出最终产品规定的力学性质。在购买时同意，南非国家标准1431钢的等级金属板可以下面最大碳相等值(ce)供应：240wa, wc & wdd = 0.38% 300wa, wc & wdd = 0.45% 350wa, wc & wdd = 0.43% table 1 - chemical composition % (ladle analysis) as specified in sa

6、bs 1431, 1987 - table 2 (as amended) maximum chemical composition1)grade cmn si p s nb vnb + v al cu1)ni2)cr2) mo2) normal supply conditions240wa 0.22 1.600.500.0400.0500.010.030.040.100.350.300.300.10 as rolled240wc 0.22 1.600.500.0400.0500.010.030.040.100.350.300.300.10 as rolled240wdd 0.22 1.600.

7、500.0400.0500.010.030.040.100.350.300.300.10 normalised300wa 0.22 1.600.500.0400.0500.010.030.040.100.350.300.300.10 as rolled300wc 0.22 1.600.500.0400.0500.010.030.040.100.350.300.300.10 as rolled300wdd 0.22 1.600.500.0400.0500.010.030.040.100.350.300.300.10 normalised350wa 0.22 1.600.500.0400.0500

8、.010.030.040.100.350.300.300.10 as rolled 350wc 0.22 1.600.500.0400.0500.010.030.040.100.350.300.300.10 as rolled < 16 mm thick normalised3) > 16mm 350wdd 0.22 1.600.500.0400.0500.010.030.040.100.350.300.300.10 normalised1. plates may be ordered with 0.20 / 0.35% copper for improved atmospheri

9、c corrosion resistance. 2. trace elements only. 3. can be supplied controlled rolled.表1 根据sabs 1431, 1987要求，化学成分 % (钢水包分析) - 表2 (按修正) 最大化学成分1)等级 cmn si p s nb vnb + v al cu1)ni2)cr2) mo2) 正常供给条件240wa 0.22 1.600.500.0400.0500.010.030.040.100.350.300.300.10 轧制240wc 0.22 1.600.500.0400.0500.010.030.040

10、.100.350.300.300.10 轧制240wdd 0.22 1.600.500.0400.0500.010.030.040.100.350.300.300.10 标准300wa 0.22 1.600.500.0400.0500.010.030.040.100.350.300.300.10 轧制300wc 0.22 1.600.500.0400.0500.010.030.040.100.350.300.300.10 轧制300wdd 0.22 1.600.500.0400.0500.010.030.040.100.350.300.300.10 标准350wa 0.22 1.600.500

11、.0400.0500.010.030.040.100.350.300.300.10 轧制350wc 0.22 1.600.500.0400.0500.010.030.040.100.350.300.300.10 轧制< 16 mm厚 标准3) > 16mm 350wdd 0.22 1.600.500.0400.0500.010.030.040.100.350.300.300.10 标准1. 为抵抗大气腐蚀金属板可以含0.20 / 0.35% 铜。2. 仅微量元素3. 供应受轧制限制。table 2 - typical chemical composition chemical co

12、mpositiongrade c1)simn2)p (max)s 3)(max)alnbvn240wa 0.120.254)1.00.0200.0300.035-240wc 0.120.254)1.00.0200.0300.035-240wdd 0.120.251.00.0200.0300.035-300wa 0.180.354)1.350.0200.0300.035-300wc 0.180.354)1.350.0200.0300.035-300wdd 0.180.351.350.0200.0300.035-350wa 0.150.351.250.0200.0300.0350.028-350w

13、c 0.150.351.250.0200.0300.0350.028-350wdd 0.150.351.250.0200.0300.0350.028-1. c usually is 0.02% lower on all hot strip mill products. 2. mn usually is 0.30% lower on all hot strip mill products. 3. for applications where toughness or through thickness strength is important, the plates may be ordere

14、d as per appendix a of sabs 1431 to the following stricter sulphur contents : - clause 0.11:s = 0.025% max - clause 0.12:s = 0.012% max - clause 0.13:s = 0.005% max 4. substantially lower si contents may be used. 表2 典型化学成分 化学成分等级c1)simn2)p (最大)s 3)(最大)alnbvn240wa 0.120.254)1.00.0200.0300.035-240wc 0

15、.120.254)1.00.0200.0300.035-240wdd 0.120.251.00.0200.0300.035-300wa 0.180.354)1.350.0200.0300.035-300wc 0.180.354)1.350.0200.0300.035-300wdd 0.180.351.350.0200.0300.035-350wa 0.150.351.250.0200.0300.0350.028-350wc 0.150.351.250.0200.0300.0350.028-350wdd 0.150.351.250.0200.0300.0350.028-1.在所有钢带热轧成品中碳

16、含量通常低于0.02%。2.在所有钢带热轧成品中锰含量通常低于0.03%。3.用于刚度或全部厚度强度是重要的金属板必须严格按照sabs 1431附录a要求，符合下面含硫量要求：- 条款 0.11:s = 0.025%最大 - 条款0.12:s = 0.012%最大- 条款 0.13:s = 0.005%最大4. 实际上硅含量更低可以使用。weldability 焊接the sabs 1431 range of structural steel grades is readily weldable by means of the usual metal-arc processes. when w

17、elding thick plates, reference should be made to bs 5135:1984 "specification for arc welding of carbon manganese steels" carbon equivalent (ce) values should be calculated from the values of the chemical composition indicated on the test certificates for the plates concerned. the formula t

18、o be used is:南非国家标准结构钢1431范围可以容易使用普通金属电弧工艺焊接。当焊接厚金属板时，可以参考英国标准5135:1984“锰碳钢电弧焊接规范”，碳等价值(ce)可以从相关金属板实验证明书上显示的化学成分含量值计算。使用的公式是：ce = c + mn + cu + ni + mo + v + cr 6 5 15 ultrasonic testing 超声测试plates may be ordered ultrasonically tested to any grade of bs 5996, as outlined in sabs 1431 appendix b-2:01

19、4 (16 - 80mm) 可以按照南非国家标准1431附录b-2:014 (16 - 80mm)中要点对英国标准5996任何等级金属板进行超声测试。 bend test 屈服试验if agreed at the time of ordering, the material may be subjected to a bend test as detailed in sabs 1431 paragraph 6.5.5. 如果订货时同意，材料可以按照南非国家标准1431 6.5.5.节进行屈服试验。certification 证明all plates are supplied with anal

20、ysis and test certificates. 供应的全部金属板带分析和试验证明。tolerances 公差plate are supplied with dimensional tolerances according to bs en 10051:1992供应的全部金属板尺寸公差符合英国标准bs en 10051:1992要求。table 3 - mechanical properties as specified in sabs 1431 - 1987: table 5 gradegradetensilestrength(mpa)min yield strength (mpa)

21、for thickness t (mm)elongation % (min) on gauge length ofcharpy v-notch impact test3<t<16 16<t<40 40<t<63 63<t<80 50 mm 200 mm 5.65 so avrageimpactresistance j (min)testtemperature(oc)thickness(max)(mm)240wa 380/510240240230220282022-240wc 380/51024024023022028202227080240wdd

22、 380/51024024023022028202227-3080300wa 450/620300300290280242022-300wc 450/62030030029028024202227063300wdd 450/62030030029028024202227-3063350wa 480/650350350340325221820-350wc 480/65035035034032522182027080350wdd 480/65035035034032522182027-3080macsteel vrn :- 17 berry road tel: (011) 861-5200 roodekop begin_of_the_skype_high1401 lighting (011) 861-5200 south africa end_of_the_skype_highlipo box 123813 ghting alrode fax: (011) 861