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Chrome alloy casting iron steel cylpebs
1.Diameter tolerance and Length tolerance
|
Diameter（mm) |
8x10 |
10x12 |
12x14 |
14x16 |
16x18 |
18x20 |
20x25 |
|
25x30 |
30x35 |
35x40 |
40x45 |
45x50 |
50x55 |
55x60 |
|
|
Diameter tolerance(mm) |
+1，-1 |
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|
Length tolerance（mm） |
+2，-2 |
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2.Chemical composition
|
Name |
Brand |
Chemical composition（%） |
||||||||
|
C |
Si |
Mn |
Cr |
Mo |
Cu |
Ni |
P |
S |
|
|
|
Chrome alloy casting steel cylpebs |
ZQCr26 |
2.0-3.3 |
1.2max |
0.3-1.5 |
>23.0-30.0 |
0-3.0 |
0-1.2 |
0-1.5 |
≤0.10 |
≤0.06 |
|
ZQCr20 |
2.0-3.3 |
1.2max |
0.3-1.5 |
>18.0-23.0 |
0-3.0 |
0-1.2 |
0-1.5 |
≤0.10 |
≤0.06 |
|
|
ZQCr15 |
2.0-3.3 |
1.2max |
0.3-1.5 |
>14.0-18.0 |
0-3.0 |
0-1.2 |
0-1.5 |
≤0.10 |
≤0.06 |
|
|
ZQCr12 |
2.0-3.3 |
1.2max |
0.3-1.5 |
>10.0-14.0 |
0-3.0 |
0-1.2 |
0-1.5 |
≤0.10 |
≤0.06 |
|
|
ZQCr8 |
2.1-3.3 |
2.2max |
0.3-1.5 |
7.0-10.0 |
0-1.0 |
0-0.8 |
－ |
≤0.10 |
≤0.06 |
|
|
ZQCr5 |
2.1-3.3 |
1.5max |
0.3-1.5 |
4.0-6.0 |
0-1.0 |
0-0.8 |
－ |
≤0.10 |
≤0.10 |
|
|
ZQCr2 |
2.1-3.6 |
1.5max |
0.3-1.5 |
1.0-3.0 |
0-1.0 |
0-0.8 |
－ |
≤0.10 |
≤0.10 |
|
3.Technical specification
|
Name |
Brand |
Diameter |
Hardness |
Breakage rate |
Impact value |
Drop times |
Micro structure |
|
Chrome alloy |
ZQCr26 |
17-150 |
>58 |
<1% |
>7 |
≥12000 |
M+C |
|
ZQCr20 |
17-150 |
>58 |
<1% |
>6 |
≥12000 |
M+C |
|
|
ZQCr15 |
17-150 |
>58 |
<1% |
>5 |
≥12000 |
M+C |
|
|
ZQCr12 |
17-150 |
>58 |
<1% |
>3.5 |
≥12000 |
M+C |
|
|
ZQCr8 |
17-150 |
>58 |
<1% |
>3 |
≥12000 |
M+C |
|
|
ZQCr5 |
17-150 |
>47 |
<1% |
>2 |
≥10000 |
M+C |
|
|
ZQCr2 |
17-150 |
>45 |
<1% |
>1.5 |
≥8000 |
P+C |