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MATERIAL SPECIFICATIONS  

DIN EN 10084 (1998), DIN 17210 (1986)

CHEMICAL COMPOSITION (WEIGHT %)      

C (ï¼…):     0.15 ~ 0.21
Si (ï¼…):    ≤ 0.40
Mn (ï¼…):   0.50 ~ 0.90
P (ï¼…)≤:   0.025
S (ï¼…)≤:   0.015
Cr (ï¼…):    1.50 ~ 1.80
Mo (ï¼…):   0.25 ~ 0.35
Ni (ï¼…):    1.40 ~ 1.70
Other (ï¼…):  Al ≤0.05, Cu ≤0.30

MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS

Hot working temperature /℃:  1150~850
Heat treatment temperature /℃| annealing:    650~700
Heat treatment temperature /℃|carburization: 880~980
Heat treatment temperature /℃|quenchingâ… (center):    830~870
Heat treatment temperature /℃|quenchingâ…¡(surface):   780~820, Oil
Heat treatment temperature /℃|tempering:    150~200

HBW≤:  229
|size /mm:   Ï†11
TS, |σb/MPa:  1180~1420
YS, |σs≥/MPa:  835
EL, |δ5(ï¼…)≥:  7.0
RA, |ψ(ï¼…)≥:  30
Impact, |AKV/J   41

|size /mm:   Ï†30
TS, |σb/MPa:  1080~1330
YS, |σs≥/MPa:  785
EL, |δ5(ï¼…)≥:  8.0
RA, |ψ(ï¼…)≥:  35.0
Impact, |AKV/J:  41

|size /mm:  Ï†63
TS, |σb/MPa:  980~1270
YS, |σs≥/MPa: 685
EL, |δ5(ï¼…)≥:  8.0
RA, |ψ(ï¼…)≥:  35.0
Impact, |AKV/J:   -
 











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