SAE4320 637m17 DIN 1.5714 16nicr4 Special Alloy Case Hardening Steels

Model NO.
SAE4320 637M17 DIN1.5714 16NiCr4
Composition
Ferrous Steel Scrap
Technique
Hot Forged, or Hot Rolled
Shape
Round, Flat or Square
Surface Treatment
Black Surface, Grinded, Peeled, Milled, Polished
Special Use
Alloy Structural Steel
Application
Structural Steel Bar
Size Range
Round Bar:Dia12~420mm Flat Bar:2~420 X 30~1500mm
Quality Standard
BS En 10084 2008 Case Hardening Steels
Smelting Process
Ef, Ef/Eaf+Lf+Vd, Ef/Eaf+ESR
Delivery Condition
Hot Rolled, Forged, Annealed, Quenched and Tempered
Surface Condition
Black Surface, Grinded, Peeled, Milled, Polished
Transport Package
Seaworth Packing
Specification
Round Bar: Dia12~420mm Flat Bar: 2~420 X 30~1500mm
Trademark
FUSHUN
Origin
Huangshi, Hubei
HS Code
7228100000
Production Capacity
5000tons/Year
Reference Price
$ 360.00 - 900.00
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Product Description

SAE4320 637m17 DIN 1.5714 16nicr4 Special Alloy Case Hardening Steels SAE4320 637m17 DIN 1.5714 16nicr4 Special Alloy Case Hardening Steels SAE4320 637m17 DIN 1.5714 16nicr4 Special Alloy Case Hardening Steels Similar Grade:
 
DIN Material No. AFNOR SAE BS
16NiCr4 1.5714 16NC6 4320 637M17

Quality Standard:
BS EN 10084 2008 Case hardening steels

Chemical Composition(%)

C 		Mn Si P S Cr Ni
0.13-0.19 0.70-1.00 0.40 max 0.025 max 0.035 max 0.60-1.00 0.80-1.10

Mechanical Properties(values obtained on test blanks after core hardening + stress-relieving)

Test Blanks Diameter(mm) 		Tensile Strength (Mpa) Yield Strength (Mpa) Elongation (longitudinal) (%) Impact 20°C(J) Hardness (HB)
11mm 1080-1470 835 min 9 min 30 min 327-417
30mm 830-1130 590 min 10 min 32.5 min 249-339

HEAT TREATMENT AND HOT PLASTIC DEFORMATION TEMPERATURES

Process 		TEMPERATURE°C Cooling Medium
Hot Forming 900-1150 air
Normalizing 870 min air
Soft Annealing 700 min air 217HB max
Carburising 870-950 /
Core hardening 840-880 oil-polymer salt bath
Carbonitriding 750-930 gas
Isothermal annealing 860 min cooling to 650, then air (HB 166-217)
Case hardening 810-840 oil-polymer salt bath
Tempering 150-200 /

Applications
Alloyed case hardening steel for parts with a required core tensile strength of 1000 - 1300 N/mm² and good wearing resistance as boxes, piston bolts, spindles, camshafts, gears, shafts and other mechanical controlling parts.
 

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