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GB /T 3098.6 - 2014 Mechanical properties of fasteners - Stainless steel Bolts, screws and studs

材料
C (%) C (%) Si (%) Mn (%) P (%) S (%) S (%) N (%) Cr (%)
组别 类别
A1 奥氏体
A2
A3
A4
A5⑦⑧
C1 马氏体
C3
C4
F1 铁素体
min max max max max min max max min
- 0.12 1 6.5 0.20 0.15① 0.35① - 16
- 0.10⑥ 1 2.0 0.05 - 0.03 - 15⑤
- 0.08 1 2.0 0.05 - 0.03 - 17
- 0.08⑥ 1 2.0 0.05 - 0.03 - 16
- 0.08 1 2.0 0.05 - 0.03 - 16
0.09 0.15 1 1.0 0.05 - 0.03 - 12
0.17 0.25 1 1.0 0.04 - 0.03 - 16
0.08 0.15 1 1.5 0.06 0.15① 0.35① - 12
- 0.12 1 1.0 0.04 - 0.03 - 15
材料
Cr (%) Mo (%) Mo (%) Ni (%) Ni (%) Cu (%) Cu (%) W (%)
组别 类别
A1 奥氏体
A2
A3
A4
A5⑦⑧
C1 马氏体
C3
C4
F1 铁素体
max min max min max min max max
19 - 0.70 5.0② 10.0③ 1.75 2.25 -
20 - -④ 8.0 19.0 - 4.0 -
19 - - 9.0 12.0 - 1.0 -
18 2 3 10.0 15.0 - 4.0 -
19 2 3 10.5 14.0 - 1.0 -
14 - - - 1.0 - - -
18 - - 1.5 2.5 - - -
14 - 0.60 - 1.0 - - -
18 - -⑨ - 1.0 - - -
①, 硫可用硒代。
②, 如镍含量低于8%,则锰的最小含量应为5%。
③, 镍含量大于8% 时,对铜的最小含量不予限制。
④, 由制造者确定钼的含量,但对某些使用场合,如有必要限定钥的极限含量时,则应在订单中由用户注明。
⑤, 如果铬含量低于17%,则镍的最小含量应为12%。
⑥, 对最大含碳量达到0.03%的奥氏体不锈钢,氮含量最高可以达到0.22%。
⑦, 为稳定组织,钛含量应≥(5×C%)~0.8%,并应按本表适当标志,或者铌和/钽或含量应≥(10×C%)~1.0%,并应按本表规定适当标志。
⑧, 对较大直径的产品,为达到规定的机械性能,由制造者确定可以用较高的含碳量,但对奥氏体钢不得超过0.12%。
⑨, 由制造者确定可以有钼。
⑩, 含钛量可能为≥(5×C%)~0.8%
铌和/或钽含量≥(10×C%)~1%。
材料
性能等级 抗拉强度Rm(Mpa) 规定塑性延伸率为0.2%时的应力Rp0.2(Mpa) 断后伸长量A(mm) 硬度 (HB) 硬度 (HB) 硬度 (HRC) 硬度 (HRC) 硬度 (HV) 硬度 (HV)
类别 组别
奥氏体 A1 A2 A3 A4 A5
奥氏体
奥氏体
马氏体 C1
马氏体
马氏体
马氏体 C3
马氏体 C4
马氏体
铁素体 F1②
铁素体
- min min min min max min max min max
50 500 210 0.6d - - - - - -
80 800 600 0.3d - - - - - -
70 700 450 0.4d - - - - - -
50 500 250 0.2d 147 209 - - 155 220
70 700 410 0.2d 209 314 20 34 220 330
110① 1100 820 0.2d - - 36 45 350 440
80 800 640 0.2d 228 323 21 35 240 340
50 500 250 0.2d 147 209 - - 155 220
70 700 410 0.2d 209 314 20 34 220 330
45 450 250 0.2d 128 209 - - 135 220
60 600 410 0.2d 171 271 - - 180 285
①, 淬火并回火,最低回火温度为275 ℃。
②, 螺纹公称直径d ≤24 mm。
Alternative history GB 3098.6 - 1986(部分) GB /T 3098.6 - 2000 GB /T 3098.6 - 2014 GB /T 3098.6 - 2023

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