30crmov9 DIN1.7707 Nitriding Steel Round Bar

• Type: Round
• Standard: DIN
• Composition: Ferrous Steel Scrap
• Technique: Hot Forged,or Hot Rolled
• Shape: Round,Flat or Square
• Surface Treatment: Polished,Grinded or Peeled
• Model NO.: 30CrMoV9 DIN1.7707
• Special Use: Alloy Structural Steel
• Application: Structural Steel Bar
• Transport Package: Seaworth Packing
• Specification: Round Bar: Dia12~420mm Flat Bar: 2~420 X 30~1500mm
• Trademark: CHENGQUAN
• Origin: Huangshi, Hubei
• HS Code: 7228100000
• Production Capacity: 5000tons/Year

Product Description

ApplicationStructural 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.All Grades Comparison

DIN	EN
1.7707	30CrMoV9

Quality StandardEN 10250 Open steel die forgings for general engineering purposes. Alloy special steelsChemical Composition(%)

C	Mn	Si	P	S	Cr	Ni	Mo	V
0.26-0.34	0.40-0.70	0.40 max	0.035 max	0.035 max	2.30-2.70	0.60 max	0.15-0.25	0.10-0.20

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

Process	Diameter(mm)	Tensile Strength Rm (Mpa)	Yield Strength Rp0.2 (Mpa)	Elongation A5 (%)	Impact Value Kv (J) Room Temperature
QUENCHED AND TEMPERED	160 max	900 min	700 min	12 min	35 min
QUENCHED AND TEMPERED	160-330	800 min	590 min	14 min	35 min

HEAT TREATMENT:

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

1. Nitriding:
   Gas/plasma nitriding temperature (gas, salt bath): 570-580°C
   Gas/plasma nitriding temperature (powder, plasma): 580°C
   Surface hardness after nitriding: 800 HVHardening: Harden from a temperature of 850-880°C followed by oil quenching.

·  Tempering:Tempering temperature: 570-680°C.Forging:Hot forming temperature: 1050-850°C.Mill′s test certificate:EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.