33NiCrMoV14-5 1.6956 Alloy Special Steels
33NiCrMoV14-5 1.6956 Alloy Special Steels
1. 1.6956 Description and Application
EN 1.6956 steel is an alloy steel formulated for primary forming into wrought products. Cited properties are appropriate for the quenched and tempered condition. 1.6956 is the EN numeric designation for this material. 33NiCrMoV14-5 is the EN chemical designation. 33NiCrMoV14-5 1.6956 Alloy Special Steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on.
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2.All Grades Comparison
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3.Quality Standard
EN 10250 Open steel die forgings for general engineering purposes. Alloy special steels
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4. 1.6956 Chemical Composition(%)
| C | Mn | Si | P | S | Cr | Ni | Mo | V |
|---|---|---|---|---|---|---|---|---|
| 0.28-0.38 | 0.15-0.40 | 0.40 max | 0.035 max | 0.035 max | 1.00-1.70 | 2.90-3.80 | 0.30-0.60 | 0.08-0.25 |
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5.Mechanical Properties(T=20°C if not differently stated)
| Process | Diameter(mm) | Tensile Strength Rm (Mpa) | Yield Strength Rp0.2 (Mpa) | Elongation A5 (%) (l) | Elongation A5 (%) (tr) | Impact Value Kv (J) Room Temperature (l) | Impact Value Kv (J) Room Temperature (tr) |
|---|---|---|---|---|---|---|---|
| QUENCHED AND TEMPERED | 160 max | 1100 min | 980 min | 10 min | 7 min | 28 min | 17 min |
| QUENCHED AND TEMPERED | 160-330 | 1000 min | 820 min | 12 min | 8 min | 48 min | 27 min |
| QUENCHED AND TEMPERED | 330-660 | 950 min | 780 min | 12 min | 8 min | 48 min | 27 min |
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6. 1.6956 HEAT TREATMENT:
- Hardening: Harden from a temperature of 820-890oC followed by oil or quenching.
- Tempering: 550-650oC
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7.Mill′s test certificate:
EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.
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