〔25〕高温用合金钢螺栓材料

（Alloy Steel Bolting Materials for High Temperature Service)

标准代号

规格号码

记号

化学成分（%)Chemical composition

拉伸试验 Tensile requirements

C

Si

Mn

P

S

Cr

Mo

V

厚度（mm)

降伏强度(Mpa)

抗拉强度(Mpa)

伸长度(%)

CNS

10439

SNB5

≦0.1

≦1.0

≦1.0

≦0.04

≦0.03

4.0-6.0

0.40-0.65

-

≦100

≧550

≧690

≧16

JIS

G4107

SNB5

≦0.1

≦1.0

≦1.0

≦0.04

≦0.03

4.0-6.0

0.40-0.65

-

≦100

≧550

≧690

≧16

ASTM

A193

Gr.B5

≦0.1

≦1.0

≦1.0

≦0.04

≦0.03

4.0-6.0

0.40-0.65

-

≦116

≧550

≧685

≧16

CNS

10439

SNB7

0.38-0.48

0.20-0.35

0.75-1.00

≦0.04

≦0.04

0.8-1.1

0.15-0.25

-

≦63

≧726

≧860

≧16

JIS

G4107

SNB7

0.38-0.48

0.20-0.35

0.75-1.00

≦0.04

≦0.04

0.8-1.1

0.15-0.25

-

≦63

≧726

≧860

≧16

ASTM

A193

Gr.B7

0.37-0.49

0.15-0.35

0.65-1.10

≦0.035

≦0.04

0.75-1.20

0.15-0.25

-

≦63

≧720

≧860

≧16

DIN

17200

42CrMo4

0.33-0.45

0.15-0.40

0.5-0.8

≦0.035

≦0.035

0.9-1.2

0.15-0.30

-

16≦t≦40

≧765

980-1180

≧11

CNS

10439

SNB16

0.36-0.44

0.20-0.35

0.45-0.70

≦0.04

≦0.04

0.80-1.15

0.5-0.65

0.25-0.35

≦63

≧722

≧862

≧18

JIS

G4107

SNB16

0.36-0.44

0.20-0.35

0.45-0.70

≦0.04

≦0.04

0.80-1.15

0.5-0.65

0.25-0.35

≦63

≧722

≧862

≧18

ASTM

A193

Gr.B16

0.36-0.47

0.15-0.35

0.45-0.70

≦0.035

≦0.04

0.8-1.1

0.5-0.7

0.25-0.35

-

-

-

-

DIN

17240

40CrMoV4-7

0.35-0.45

0.2-0.3

0.4-0.7

≦0.04

≦0.04

0.8-1.2

0.5-0.6

0.25-0.35

-

-

-

-