t≤5 |
St42-2 K |
冷拔和无热处理(K) |
600~900 |
≥500 |
≥6 |
5
|
冷拔和无热处理(K) |
550~850 |
≥450 |
≥7 |
|
10
|
冷拔和无热处理(K) |
550~850 |
≥390 |
≥7 |
|
16
|
冷拔和无热处理(K) |
550~800 |
≥350 |
≥8 |
|
25
|
冷拔和无热处理(K) |
500~750 |
≥310 |
≥9 |
|
40
|
冷拔和无热处理(K) |
450~700 |
≥270 |
≥11 |
|
t>80 |
|
冷拔和无热处理(K) |
按商定 |
按商定 |
按商定 |
10
St42-2 SH |
去皮和无热处理(SH) |
420~500 |
≥260 |
≥22 |
|
16
|
去皮和无热处理(SH) |
420~500 |
≥250 |
≥22 |
|
40
|
去皮和无热处理(SH) |
420~500 |
≥240 |
≥22 |
|
t>100 |
|
去皮和无热处理(SH) |
≥420 |
按商定 |
按商定 |
t≤25 |
St42-2 K+G;St42-2 SH+G |
冷拔和软化退火(K+G)或去皮和软化退火(SH+G) |
390~500 |
≥220 |
≥22 |
25
|
冷拔和软化退火(K+G)或去皮和软化退火(SH+G) |
420~500 |
≥240 |
≥22 |
|
t>100 |
|
冷拔和软化退火(K+G)或去皮和软化退火(SH+G) |
≥420 |
按商定 |
按商定 |
t≤100 |
St42-2 K+N;St42-2 SH+N |
冷拔和正火(K+N)或去皮和正火(SH+N) |
420~500 |
≥240 |
≥22 |
t>100 |
|
冷拔和正火(K+N)或去皮和正火(SH+N) |
≥420 |
按商定 |
按商定 |