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ASTM A148 Standard for High Strength Cast Steel

ASTM A148/A148M-1998

This sheet is providing the chemical components and physical properties for the high strength cast steel by standard of ASTM A148. Moreover, we listed the old steel grades as the comparison for you.

Chemical Composition

The steel shall conform to sulfur and phosphorus requirements as the following.

The content of carbon, manganese, silicon, and alloying elements may be agreement, be prescribed by the purchaser. If not specified, the content may be selected by the manufacturer to obtain the required mechanical properties.

When the analysis of carbon, manganese, silicon, or any intentionally added alloying element is specifically requested in the contract or order, it shall be made by the manufacturer and reported to the purchaser. The results of these analyses shall not be used as a basis for rejection except by prior agreement.

Steel Grade

Old Steel Grade

Chemical Components(%)

Physical Properties (Min)

P

S

σb
/MPa

σs
/ Mpa

δ
(%)

ψ
(%)

550-270

80-40

0.05

0.06

550

275

18

30

550-345

80-50

0.05

0.06

550

345

12

35

620-415

90-60

0.05

0.06

620

415

20

40

725-585

105-85

0.05

0.06

725

585

17

35

795-655

115-95

0.05

0.06

795

655

14

30

895-795

130-115

0.05

0.06

895

795

11

25

930-860

135-125

0.05

0.06

930

860

9

22

1305-930

150-135

0.05

0.06

1035

930

7

18

1105-1000

160-145

0.05

0.06

1105

1000

6

12

1140-1035

165-150

0.020

0.020

1140

1035

5

20

1140-1035L

165-150L

0.020

0.020

1140

1035

5

20

1450-1240

210-180

0.020

0.020

1450

1240

4

15

1450-1240L

210-180L

0.020

0.020

1450

1240

4

15

1795-1450

260-210

0.020

0.020

1795

1450

3

6

1795-1450L

260-210L

0.020

0.020

1795

1450

3

6

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