ASTM A672
ASTM A672
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ASTM A672
ASTM A672: Standard Specification For Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures
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  • Plate Specification
  • Heat treatment

Pipe grade

Specification and grade

Post-weld heat treatment temperature range °F (°C)

Normalizing temperature, max, °F (°C)

Quenching temperature, max, °F (°C)

Tempering temperature, min, °F (°C)

A 45

A285A

1100-1250 (590-680)

1700 (925)

A 50

A285B

1100-1250 (590-680)

1700 (925)

A 55

A285C

1100-1250 (590-680)

1700 (925)

B 60

A515-60

1100-1250 (590-680)

1750 (950)

B 65

A515-65

1100-1250 (590-680)

1750 (950)

B 70

A515-70

1100-1250 (590-680)

1750 (950)

C 55

A516-55

1100-1250 (590-680)

1700 (925)

1650 (900)

1200 (650)

C 60

A516-60

1100-1250 (590-680)

1700 (925)

1650 (900)

1200 (650)

C 65

A516-65

1100-1250 (590-680)

1700 (925)

1650 (900)

1200 (650)

C 70

A516-70

1100-1250 (590-680)

1700 (925)

1650 (900)

1200 (650)

D 70

A537-1

1100-1250 (590-680)

1700 (925)

D 80

A537-2

1100-1250 (590-680)

1650 (900)

1200 (650)

H 75

A302-A

1100-1250 (590-680)

1800 (980)

1100 (590)

H 80

A302-B, C or D

1100-1250 (590-680)

1800 (980)

1100 (590)

J 80

A533-C11C

1100-1250 (590-680)

1800 (980)

1100 (590)

J 90

A533-C12C

1100-1250 (590-680)

1800 (980)

1100 (590)

J 100

A533-C13C

1100-1250 (590-680)

1800 (980)

1100 (590)

K 75

A202A

1100-1250 (590-680)

K 85

A202B

1100-1250 (590-680)

L 65

A204A

1100-1200 (590-650)

L 70

A204B

1100-1200 (590-650)

L 75

A204C

1100-1200 (590-650)

N 75

A299

1100-1200 (590-650)

1700 (925)

Classes 10, 11, 12 and 13 are not heat treated. All other classes must be heat treated according to the parameters shown below:

Heat treatment parameters

Pipe grade

Specification and grade

Post-weld heat treatment temperature range °F (°C)

Normalizing temperature, max, °F (°C)

Quenching temperature, max, °F (°C)

Tempering temperature, min, °F (°C)

A 45

A285A

1100-1250 (590-680)

1700 (925)

A 50

A285B

1100-1250 (590-680)

1700 (925)

A 55

A285C

1100-1250 (590-680)

1700 (925)

B 60

A515-60

1100-1250 (590-680)

1750 (950)

B 65

A515-65

1100-1250 (590-680)

1750 (950)

B 70

A515-70

1100-1250 (590-680)

1750 (950)

C 55

A516-55

1100-1250 (590-680)

1700 (925)

1650 (900)

1200 (650)

C 60

A516-60

1100-1250 (590-680)

1700 (925)

1650 (900)

1200 (650)

C 65

A516-65

1100-1250 (590-680)

1700 (925)

1650 (900)

1200 (650)

C 70

A516-70

1100-1250 (590-680)

1700 (925)

1650 (900)

1200 (650)

D 70

A537-1

1100-1250 (590-680)

1700 (925)

D 80

A537-2

1100-1250 (590-680)

1650 (900)

1200 (650)

H 75

A302-A

1100-1250 (590-680)

1800 (980)

1100 (590)

H 80

A302-B, C or D

1100-1250 (590-680)

1800 (980)

1100 (590)

J 80

A533-C11C

1100-1250 (590-680)

1800 (980)

1100 (590)

J 90

A533-C12C

1100-1250 (590-680)

1800 (980)

1100 (590)

J 100

A533-C13C

1100-1250 (590-680)

1800 (980)

1100 (590)

K 75

A202A

1100-1250 (590-680)

K 85

A202B

1100-1250 (590-680)

L 65

A204A

1100-1200 (590-650)

L 70

A204B

1100-1200 (590-650)

L 75

A204C

1100-1200 (590-650)

N 75

A299

1100-1200 (590-650)

1700 (925)

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