KmTBNi4Cr2-DT
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抗磨白口铸铁的化学成分(GB/T8263-1999)
牌号
化学成分(未标示者为允许范围*大值)%
C
Si
Mn
Cr
Mo
Ni
Cu
S
P
KmTBNi4Cr2-DT
2.4-3.0
0.8
2.0
1.5-3.0
1.0
3.3-5.0
——
0.15
0.5
KmTBNi4Cr2-GT
3.0-3.6
2.0
2.0
1.5-3.0
1.0
3.3-5.0
——
0.15
0.15
KmTBCr9Ni5
2.5-3.6
1.2
2.0
7.0-11.0
1.0
4.5-7.0
——
0.15
0.15
KmTBCr2
2.1-3.6
1.5-2.2
2.0
1.5-3.0
1.0
1.0
1.2
0.10
0.15
KmTBCr8
2.1-3.2
1.5
2.0
7.0-11.0
1.5
1.0
1.2
0.06
0.10
KmTBCr12
2.0-3.3
1.2
2.0
11.0-14.0
3.0
2.5
1.2
0.06
0.10
KmTBCr15Mo
2.0-3.3
1.2
2.0
14.0-18.0
3.0
2.5
1.2
0.06
0.10
KmTBCr20Mo
2.0-3.3
1.2
2.0
18.0-23.0
3.0
2.5
1.2
0.06
0.10
KmTBCr26
2.0-3.3
1.2
2.0
23.0-30.0
3.0
2.5
2.0
0.06
0.10
表2 抗磨白口铸铁的硬度(GB/T8263-1999)
牌号
铸态或铸态并去应力处理
硬化或硬化态并去应力处理
软化退火态
HRC
HB
HRC
HB
HRC
HB
KmTBNi4Cr2-DT
≥53
≥550
≥56
≥600
——
——
KmTBNi4Cr2-GT
≥53
≥550
≥56
≥600
——
——
KmTBCr9Ni5
≥50
≥450
≥56
≥600
——
——
KmTBCr2
≥46
≥450
≥56
≥600
≤41
≤400
KmTBCr8
≥46
≥450
≥56
≥600
≤41
≤400
KmTBCr12
≥46
≥450
≥56
≥600
≤41
≤400
KmTBCr15Mo
≥46
≥450
≥58
≥650
≤41
≤400
KmTBCr20Mo
≥46
≥450
≥58
≥650
≤41
≤400
KmTBCr26
≥46
≥450
≥56
≥600
≤41
≤400