
Pump Body
Pump head body
1 , smelting chemical composition of steel
Grade |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Mo |
V |
Cu |
Nb |
25Cr2Ni4MoV |
0.24 ~ 0.30 |
0.15 ~ 0.30 |
≤ 0.50 |
≤ 0.015 |
≤ 0.015 |
3.50 ~ 4.00 |
1.40 ~ 2.00 |
0.30 ~ 0.60 |
0.08 ~ 0.15 |
≤ 0.20 |
/ |
30CrNi2MoV |
0.28 ~ 0.33 |
0.15 ~ 0.33 |
0.50~ 0.80 |
≤ 0.015 |
≤ 0.015 |
2.40 ~ 2.70 |
0.90 ~ 1.10 |
0.40 ~ 0.55 |
0.06 ~ 0.12 |
≤ 0.20 |
/ |
30CrNi3MoV |
0.26 ~ 0.33 |
0.15 ~ 0.35 |
0.30~ 0.90 |
≤ 0.015 |
≤ 0.015 |
2.80 ~ 3.30 |
0.80 ~ 1.50 |
0.40 ~ 0.60 |
0.06 ~ 0.25 |
≤ 0.20 |
/ |
17-17PH ( Stainless steel) |
≤ 0.07 |
≤ 1.00 |
≤ 1.00 |
≤ 0.025 |
≤ 0.010 |
3.50-5.00 |
15.00-17.50 |
/ |
/ |
3.00-5.00 |
0.15-0.45 |
2 Mechanical properties should meet
Grade |
Yield Strength Rp0.2(M p a) |
tensile strength Rm(M p a) |
Elongation A(%) |
Shrinkage rate Z(%) |
Charpy impact energy AKV2( J) |
Reference hardness ( HB ) |
|
20 ℃ |
-40 ℃ |
||||||
25Cr2Ni4MoV |
≥ 1050 |
≥ 1120 |
≥ 12 |
≥ 35 |
Single value ≥ 33 |
Average ≥26 |
305-380 |
Single value≥20 |
|||||||
30CrNi2MoV |
≥ 880( longitudinal ) |
≥ 1020 ( longitudinal ) |
≥ 12 |
≥ 35 |
Average value ≥ 42 |
Average value ≥ 34 |
280-360 |
≥ 860( horizontal ) |
≥ 960 ( horizontal ) |
Single value≥34 |
Single value ≥27 |
||||
30CrNi3MoV |
≥ 900 ( longitudinal ) |
≥ 1050 ( longitudinal ) |
≥ 14 |
≥ 35 |
Average value ≥ 42 |
Average value ≥ 34 |
290-360 |
≥ 880( horizontal ) |
≥ 1000 ( horizontal ) |
Single value≥34 |
Single value ≥27 |
||||
17-17PH ( Stainless steel) |
≥ 900 |
≥ 1000 |
≥ 14 |
/ |
Single value ≥ 18 |
/ |
/ |
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