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ASTM A958 for Steel Castings made by Steel Foundry in China

ASTM A958 material grade includes SC 1020, SC 1025, SC 1030, SC 1040, SC 1045, SC 4130, SC 4140, SC 4330, SC 4340, SC 8620, SC 8625, SC 8630.

This standard is for steel castings, carbon and alloy, with tensile requirements, chemical requirements similar to standard wrought grades.

Grade

C

Mn

P

S

Si

Ni

Cr

Mo

SC 1020

0.18/0.23

0.40/0.80

0.04

0.04

0.30/0.60

-

-

-

SC 1025

0.22/0.28

0.40/0.80

0.04

0.04

0.30/0.60

-

-

-

SC 1030

0.28/0.34

0.50/0.90

0.04

0.04

0.30/0.60

-

-

-

SC 1040

0.37/0.44

0.50/0.90

0.04

0.04

0.30/0.60

-

-

-

SC 1045

0.43/0.50

0.50/0.90

0.04

0.04

0.30/0.60

-

-

-

SC 4130

0.28/0.33

0.40/0.80

0.035

0.04

0.30/0.60

-

0.80/1.10

0.15/0.25

SC 4140

0.38/0.43

0.70/1.10

0.035

0.04

0.30/0.60

-

0.80/1.10

0.15/0.25

SC 4330

0.28/0.33

0.60/0.90

0.035

0.04

0.30/0.60

1.65/2.00

0.70/0.90

0.20/0.30

SC 4340

0.38/0.43

0.60/0.90

0.035

0.04

0.30/0.60

1.65/2.00

0.70/0.90

0.20/0.30

SC 8620

0.18/0.23

0.60/1.00

0.035

0.04

0.30/0.60

0.40/0.70

0.40/0.60

0.15/0.25

SC 8625

0.23/0.28

0.60/1.00

0.035

0.04

0.30/0.60

0.40/0.70

0.40/0.60

0.15/0.25

SC 8630

0.28/0.33

0.60/1.00

0.035

0.04

0.30/0.60

0.40/0.70

0.40/0.60

0.15/0.25

 

Class

65/35

70/36

80/40

80/50

90/60

105/85

115/95

130/115

135/125

150/135

160/145

165/150

210/180

Tensile, ksi

65

70

80

80

90

105

115

130

135

150

160

165

210

Tensile, min.

[450]

[485]

[550]

[550]

[620]

[725]

[795]

[895]

[930]

[1035]

[1105]

[1140]

[1450]

(MPa)

 

 

 

 

 

 

 

 

 

 

 

 

 

Yield, ksi

35

36

40

50

60

85

95

115

125

135

145

150

180

Yield, min.

[240]

[250]

[275]

[345]

[415]

[585]

[655]

[795]

[860]

[930]

[1000]

[1035]

[1240]

(MPa)

 

 

 

 

 

 

 

 

 

 

 

 

 

Elongation in 2

24

22

18

22

18

17

14

11

9

7

6

5

4

in.or50mm,

 

 

 

 

 

 

 

 

 

 

 

 

 

min, %

 

 

 

 

 

 

 

 

 

 

 

 

 

Reduction of

35

30

30

35

35

35

30

25

22

18

12

10

8

Area, min. %

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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