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ASTM A537 steel
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ASTM A537 steel

ASTM A537 steel

ASTM A537 is a standard for boiler and pressure vessel steel plate with heat treatment and carbon, Mn, Si. ASTM A537 is suitable for fusion welding pressure vessel and carbon Mn Si steel plate with heat treatment.

The grades under the standard ASTM A537:

Standard Grade
ASTM A537 A572 class1
A572 class2
A572 class3

According to standard ASTM A537, the max thickness for A537 class1 is 100mm and the max thickness for A537class2 and A537class3 is 150mm.

The heat treatment for A537class1 steel plate, A537class2 steel plate, A537class3 steel plate:

A537class1 steel plate should be normalizing and A537class2 steel plate, A537class3 steel plate should be quenching and tempering. The minimum quenching tempering temperature for A537class2 steel plate should be 620℃ and keep temperature 1/2 hours. The minimum quenching tempering temperature for A537class3 steel plate should be 630℃ and keep temperature 1/2 hours.

The ASTM A537 steel chemical composition:

Grade Chemical composition %    
C Mn P S Si Cr Mo Cu Ni
ASTM A537 ≤0.24 T≤40mm 0.64-1.46

T>40mm

0.92-1.72
≤0.035 ≤0.035 0.13-0.55 ≤0.29 ≤0.09 ≤0.38 ≤0.28

A537class1 steel plate, A537class2 steel plate, A537class3 steel plate mechanical properties:

Standard Grade Thickness Yield strength
min
Tensile strength
min
Elongation %
min
mm Mpa Mpa T≤100mm
50mm
T≥100mm
50mm
T≤200mm
200 mm
ASTM A537 A537class1 ≤65 345 485-620 22 - 18
>65-100 310 450-580
>100-150 - -
A537class2 ≤65 415 550-690 22 20 -
>65-100 380 515-655
>100-150 315 485-620
A537class3 ≤65 380 550-690 22 20 -
>65-100 345 515-655
>100-150 275 485-620

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