30CrMoV9 DIN 1.7707 Nitriding Steel

price:
Contact customer service
Heat Treatment
Cold Processing
Hot Working

30CrMoV9 DIN 1.7707 Nitriding Steel

30CrMoV9 DIN1.7707 Nitriding Steel

1. 1.7707 Application

EN 1.7707 steel is an alloy steel formulated for primary forming into wrought products. Cited properties are appropriate for the quenched and tempered condition. 1.7707 is the EN numeric designation for this material. 30CrMoV9 is the EN chemical designation. Structural parts of medium and large cross sections and high surface hardness, e.g., valve and gate valves, cylinders for combustion engines, superheated steam valves and fittings.

Back to Top

2.All Grades Comparison

Back to Top

3.Quality Standard

EN 10250 Open steel die forgings for general engineering purposes. Alloy special steels

Back to Top

4. 1.7707 Chemical Composition(%)

CMnSiPSCrNiMoV
0.26-0.340.40-0.700.40 max0.035 max0.035 max2.30-2.700.60 max0.15-0.250.10-0.20

Back to Top

5.Mechanical Properties(T=20°C if not differently stated)

ProcessDiameter(mm)Tensile Strength Rm (Mpa)Yield Strength Rp0.2 (Mpa)Elongation A5 (%)Impact Value Kv (J) Room Temperature
QUENCHED AND TEMPERED160 max900 min700 min12 min35 min
QUENCHED AND TEMPERED160-330800 min590 min14 min35 min

Back to Top

6. 1.7707 HEAT TREATMENT:

  • Soft Annealing: Heat to 680-720oC, cool slowly. This will produce a maximum Brinell hardness of 248.
  • Nitriding:

    Gas/plasma nitriding temperature (gas, salt bath): 570-580oC

    Gas/plasma nitriding temperature (powder, plasma): 580oC

    Surface hardness after nitriding: 800 HV
  • Hardening: Harden from a temperature of 850-880oC followed by oil quenching.
  • Tempering:Tempering temperature: 570-680oC.

Back to Top

7.Forging:

Hot forming temperature: 1050-850oC.

Back to Top

8.Mill′s test certificate:

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.

Back to Top