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ASTM A148 A148M for High Strength Steel Castings for Structural Industry

ASTM A148 is the specification for carbon steel, alloy steel, and stainless steel castings, the grades include 550-270, 80-40, 550-345, 80-50, 620-415, 90-60, 725-585, 105-85, 795-655, 115-95, 895-795, 130-115, 930-860, 135-125, 1305-930, 150-135, 1105-1000, 160-145, 1140-1035, 165-150 etc.

The grades of steel castings are covered and shall conform to the required chemical composition for sulfur and phosphorus. A tension test shall be performed and shall conform to the required tensile strength, yield point, and elongation. The notch bar impact properties shall also be determined by testing one set of three Charpy V-notch impact specimens.

 

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

Dandong Foundry supplied various cast steel casting parts in this standards. This is a very common standard for Chinese steel foundries. The production process including sand casting, and precision casting processes, such as lost wax investment casting, and silica sol investment casting process.

 

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