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stainless steel characteristics

Views:0     Author:Site Editor     Publish Time: 2019-10-12      Origin:Site


Currently, there are mainly stainless steels on the market.

302HQ (0Cr18Ni9Cu3) - mainly used for self-tapping screws;

SUS304 (0Cr18Ni9) - also known as A2, mainly used for the manufacture of ordinary stainless steel bolts, screws, washers, nuts, the strength of the general bolt is 70;

SUS 316 (0Cr18Ni12Mo2), SUS 316L (00Cr17Ni14Mo2) - also known as A4 is mainly used for the manufacture of high corrosion-resistant stainless steel bolts, screws, 

                                                                                             washers, nuts, the strength grade is generally 70 bolts, can also reach high strength level 80 .



不锈钢种类

化学成分 in %  Chemical Composition

Grade

C碳

Si硅

Mn锰

P磷

S硫

Cr铬

Mo钼

Ni镍


max

max

max

max

max

max

max

max

SUS XM7

0,08

1,00

2,00

0,045

0,030

17,0-19,0


8,5-10,5

(302HQ)









SUS 304

0,08

1,00

2,00

0,050

0,030

17,0-20,0

-

8,0-13,0

A2









SUS 316

0,08

1,00

2,00

0,050

0,030

16,0-18,5

2,0-3,0

10,0-14,0

A4









SUS 316L

0,03

1,00

2,00

0,050

0,030

16,0-18,5

2,0-3,0

10,0-14,0



Mechanical properties of austenitic stainless steel bolts, screws and studs



特 性

组 别

性能等级

螺纹直径

抗拉强度

降伏强度

断裂伸长率

类 别





min N/mm2

min N/mm2

min N/mm2

奥氏体

A1  A2

50

< M39

500

210

0.6d


冷加工

A2   A4

70

< M24

700

450

0.4d


高强度

A4

80

< M24

800

600

0.3d



Mechanical properties of martensitic and ferritic stainless steel bolts, screws and studs



组 别

性能等级

螺纹直径

抗拉强度

降伏强度

断裂伸长率

硬 度

类 别







HV

HB

HRC

马氏体

C1

50

< M24

500

250

0,2d

147-209

-

155-220



70


700

410

0,2d

209-314

20-34

220-330



110 4)


1100

820

0,2d

-

36-45

350-440


C3

80/td>

< M24

800

640

0.2d

228-322

21-35

240-340


C4

50

< M24

800

640

0,2d

147-209

-

155-220



70


700

410

0,2d

209-314

20-34

220-330

铁素体

F1 3)

45

< M24

450

250

0,2d

128-209

-

135-220



60


600

410

0,2d

171-271

-

180-285



Destructive torque of austenitic stainless steel bolts and screws M1.6-M16 (coarse thread)

             In accordance with the European International Industrial Standard ISO 3506



破 坏 扭 矩     Nm

螺 纹

性 能 等 级


50

70

80

M 1.6

0.15

0.2

0.24

M 2

0.3

0.4

0.48

M 2.5

0.6

0.9

0.96

M 3

1.1

1.6

1.8

M 4

2.7

3.8

4.3

M 5

5.5

7.8

8.8

M 6

9.3

13

15

M 8

23

32

37

M 10

46

65

74

M 12

80

110

130

M 16

210

290

330


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