| A 387 Class 1 Class 2 SHEETS / PLATES | ||||||||||||||||||
| ASTM | Grade | Chemical Requirements Percent (%) | Mechanical Requirements | |||||||||||||||
| C max | Mn | P | S | Si | Ni | Cr. | Mo | Cu | Others | Tensile Strength | Yield Strength | Elong mini | Hardness | |||||
| Max | Max | Max | Max | Mini-MPa (Ksi) | Mini-MPa(Ksi) | |||||||||||||
| % | Brinell | Rockwell | ||||||||||||||||
| A 387 Class 1 Class 2 | Class 1 | Class 2 | Class 1 | Class 2 | ||||||||||||||
| 2 | 0.05-0.021 | 0.55-0.80 | 0.035 | 0.04 | 0.15-0.40 | 0.50-0.80 | 0.45-0.60 | 380-550 | 486-620 | 230 | 310 | 22 | Max201HB | Max92HRB | ||||
| 5 | 0.15 | 0.30-0.60 | 0.04 | 0.03 | 0.5 | 4.00-6.00 | 0.45-0.65 | 415-585 | 515-690 | 205 | 310 | 18 | max202HB | Max92HRB | ||||
| 7 | 0.15 | 0.30-0.60 | 0.03 | 0.03 | 1 | 6.00-8.00 | 0.45-0.65 | 415-585 | 515-690 | 205 | 310 | 18 | max217HB | Max95HRB | ||||
| 9 | 0.15 | 0.30-0.60 | 0.03 | 0.03 | 1 | 8.00-10.0 | 0.90-1.10 | 415-585 | 515-690 | 205 | 310 | 18 | max217HB | Max95HRB | ||||
| 11 | 0.04-0.17 | 0.40-0.65 | 0.035 | 0.04 | 0.50-0.80 | 1.00-1.50 | 0.45-0.65 | 415-585 | 515-690 | 240 | 310 | 22 | max217HB | Max95HRB | ||||
| 12 | 0.04-0.17 | 0.40-0.65 | 0.035 | 0.04 | 0.15-0.40 | 0.80-1.15 | 0.45-0.60 | 380-550 | 450-585 | 230 | 275 | 22 | max217HB | Max95HRB | ||||
| 21 | 0.04-0.17 | 0.30-0.60 | 0.035 | 0.035 | 0.5 | 2.75-3.25 | 0.90-1.10 | 415-585 | 515-690 | 205 | 310 | 18 | max201HB | Max92HRB | ||||
| 22 | 0.05-0.17 | 0.30-0.60 | 0.035 | 0.035 | 0.5 | 2.00-2.50 | 0.90-1.10 | 415-585 | 515-690 | 205 | 310 | 18 | max201HB | Max92HRB | ||||
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Dear Mr. Hiren,
As per Table 331.1.1 OF ASME B31.3, Max. Hardness 241 BHN.
B. R.
|
Hi!
Generaly for this grade of Steel 235 BHN max is recomended for weld , HAZ ,After PWHT and base material generaly you get 200BHN max
Regards
Hegde |
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