耐热铸铁牌号及化学成分
(
摘自
GB
/
T9437
—
1988
)
|
牌
号
|
化
学
成
分
(
质量分数
),
%
|
|||||||
|
C
(
碳
)
|
Si
(
硅
)
|
Mn
(
锰
)
|
P
(
磷
)
|
S
(
硫
)
|
Cr
(
铬
)
|
Al
(
铝
)
|
Mo
(
钼
)
|
|
|
RTCr
|
3
.
00
~
3
.
80
|
1
.
50
~
2
.
50
|
≤
1
.
00
|
≤
0
.
200
|
≤
0
.
120
|
0
.
50
~
1
.
00
|
—
|
—
|
|
RTCr2
|
3
.
00
~
3
.
80
|
2
.
00
~
3
.
00
|
≤
1
.
00
|
≤
0
.
200
|
≤
0
.
120
|
1
.
00
~
2
.
00
|
—
|
—
|
|
RTCr16
|
1
.
60
~
2
.
40
|
1
.
50
~
2
.
20
|
≤
1
.
00
|
≤
0
.
100
|
≤
0
.
050
|
15
.
0
~
18
.
0
|
—
|
—
|
|
RTSi5
|
2
.
40
~
3
.
20
|
4
.
50
~
5
.
50
|
≤
0
.
80
|
≤
0
.
200
|
≤
0
.
120
|
0
.
50
~
1
.
00
|
—
|
—
|
|
RQTSi4
|
2
.
40
~
3
.
20
|
3
.
50
~
4
.
50
|
≤
0
.
70
|
≤
0
.
100
|
≤
0
.
030
|
—
|
—
|
—
|
|
RQTSi4Mo
|
2
.
70
~
3
.
50
|
3
.
50
~
4
.
50
|
≤
0
.
50
|
≤
0
.
100
|
≤
0
.
030
|
—
|
—
|
0
.
30
~
0
.
70
|
|
RQTSi5
|
2
.
40
~
3
.
20
|
4
.
50
~
5
.
50
|
≤
0
.
70
|
≤
0
.
100
|
≤
0
.
030
|
—
|
—
|
—
|
|
RQTAl4Si4
|
2
.
50
~
3
.
00
|
3
.
50
~
4
.
50
|
≤
0
.
50
|
≤
0
.
100
|
≤
0
.
020
|
—
|
4
.
00
~
5
.
00
|
—
|
|
RQTAl5Si5
|
2
.
30
~
2
.
80
|
4
.
50
~
5
.
20
|
≤
0
.
50
|
≤
0
.
100
|
≤
0
.
020
|
—
|
5
.
00
~
5
.
80
|
—
|
|
RQTAl22
|
1
.
60
~
2
.
20
|
1
.
00
~
2
.
00
|
≤
0
.
70
|
≤
0
.
100
|
≤
0
.
030
|
—
|
20
.
0
~
24
.
0
|
—
|
