20nicrmo13-4 1.6660 Case Hardening Steels

Model NO.
20NiCrMo13-4 1.6660
Composition
Ferrous Steel Scrap
Technique
Hot Forged,or Hot Rolled
Shape
Round,Flat or Square
Surface Treatment
Polished
Special Use
Safety-Critical Parts
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
Reference Price
$ 450.00 - 4,500.00
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Product Description

Application• Gears subjected to high stresses, diverse parts subject to wear and fatigue in service.
• In the quenched and tempered condition: safety-critical parts.Characteristics• High mechanical properties.
• Good fatigue strength.
• After carburising, quenching and tempering, the surface hardness is around 730 HV.
• Good toughness of the carburised layer.
• For some carburising applications, oil quenching can be replaced with gas pressure quenching in order to minimise distortion due to the heat treatment.All Grades Comparison
DIN EN
1.6660 20NiCrMo13-4
Quality StandardEN 10084 2008 Case hardening steelsChemical Composition(%)
C Mn Si P S Cr Ni Mo
0.17-0.22 0.30-0.60 0.40 max 0.025 max 0.035 max 0.80-1.20 3.00-3.50 0.30-0.50
Hardness requirements for products delivered in the conditions
Process Hardness
treated to improve shearability 277HB max
soft annealed 255HB max
treated to hardness range 207HB-255HB
treated to ferrite-pearlite structure and hardness range 197HB-241HB
Conditions for heat treating test bars and treatment of the steels:
Process Temperatures (oC)
End quench test 850
Carburizing 880-980
Core-hardening 825-880
Case-hardening 800-850
Tempering 150-250
Mill′s test certificate:EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.
 
20nicrmo13-4 1.6660 Case Hardening Steels 20nicrmo13-4 1.6660 Case Hardening Steels 20nicrmo13-4 1.6660 Case Hardening Steels

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