|
| |
LOW ALLOY STEELS
BRITISH
STANDARD |
GRADES |
U.S.A. |
Hardness
BHN |
UTS
(N/mm2) |
PROPERTIES |
|
BS3100: 1991
|
BT1
|
ASTM A148 Grades
105-85
|
201-279 |
690 |
NI/CR/MO STEELS GOOD COMBINATION OF STRENGTH TOUGHNESS
& FATIGUE RESISTANCE |
|
BT2 |
ASTM A148 Grades 120-95 |
248-327 |
850 |
|
BT3 |
ASTM A148 Grades 150-125 |
293-362 |
1000 |
B1,B2,B3,B4 |
ASTM A217 Grades WC1,WC6,WC9 |
- |
460-540 |
CR/MO STEELS FOR USE AT ELEVATED TEMPERATURES, SOME
CORROSION AND CREEP RESISTANCE |
|
B5,B6 |
ASTM A217 Grade
C5,C12 |
- |
620 |
| BW2 |
- |
201-255 |
- |
CHROME STEELS- ABRASIVE RESISTANT FOR
WEAR TILES, HAMMERS, STRIKER PLATES etc |
| BW3 |
- |
293 min |
- |
| BW4 |
- |
341 min |
- |
Mechanical properties are minimum unless shown as a
range.
|
