PIPE MOULD
General Technical Information
1)Production range:DN75MM-DN1000MM
2) Material: 21CrMo10
Chemical Composition
C | Si | Mn | P | S | Cr | Mo | Cu |
0.16~0.23 | 0.20~0.40 | 0.20~0.40 | ≤0.015 | ≤0.009 | 2.20~2.60 | 0.30~0.50 | ≤0.20 |
3)Mechanical Properties
Tensile Strength σb Mpa | Yield Strength σs Mpa | Elongation δ % | Reduction Area ψ % |
750~850 | ≥650 | ≥16 | ≥60 |
4) Ultrasonic Test
The forging of the mould will be ultrasonically tested as per JB/T1581-1996 or equivalent standard, details as follows:
A Without bursts, crack, shrinking hole and other defects.
B The defect with size within ￠2mm can be ignored.
C Individual defect with diameter of φ2~φ4mm is permitted, and the distance of the neighboring defects should be more than the 10 times of the bigger one's. For 100cm2' s area, the quantities of the defects with diameter of φ2~φ4mm should not exceed 3.
D There should not have compact district.
5) Other items
Finish: Ra1.6
Accuracy: 0.1mm
Concentricity: 1.1-1.9mm
Draft Taper: 0-0.9mm
Hardness: HB 230-270
6) P.S.
If the user has different requirements, please give us your requirements in detail along with inquiry
| Copyright© 1999-2000 LUCKY CITY (HK) GROUP CO.,LIMITED |
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