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Jual VCN / AISI 4340 / SNCM 439/ 6582

High Tensile Nickel Chrome Steel

Standard
US: ASTM A29 4340
Jerman: DIN 1.6582 34CrNiMo6
JEPANG: JIS G4103 SNCM439
British: BS 970 817M40
Eropa: EN 10250 34NiCrMo6
China: AISI 4340

Characteristics
It has high hardenability and is capable of giving good properties in large sections. It is relatively free from temper brittleness and retains useful machinability at relatively high hardness.

 

Standard & Eguivalent Ni Cr-Mo Steel

Standard Maker/ Brand
DIN JIS  AISI Assab Bohler Sanyo Thyssen Hitachi
1.6582 SNCM 439 4340 705 VCN 150 SNCM439 6582 SNCM439
1.6523 SNCM 220 8620

 Availability
Round bar
Diameter : 20mm – 390mm
Standar Length : 6010mm

 

Chemical composition: ( % )

GRADE C Si Mn P S Cr Ni Mo
SNCM 439 0.36-0.43 0.15-0.35 0.60-0.90 0.030 Max 0.030 Max 0.60-1.00 1.60-2.00 0.15-0.30
VCN 150 0.38-0.38 0.20-0.35 0.60-0.80 0.040 Max 0.040 Max 0.70-0.90 1.65-2.00 0.20-0.30
6582 0.30-0.38 0.15-0.40 0.50-0.80 0.035 Max 0.035 Max 1.30-1.70 1.30-1.70 0.15-0.30

 

Heat Treatment

Heat Treatment (°C) SNCM 439 6582
Normalizing 820 – 870   Air Cooling 850 – 880
Annealing 820 – 870 Slow Cooling 650 – 700
Quenching 810 – 860   Oil Cooling
Tempering 180 – 200 540 – 680
Hardening 830 – 860 Oil/Water
Jominy Test 845 – 855
Hot Forming 850 – 1050

 

Applications

Automotive crankshafts and rear axle shafts, aircrafts crankshafts, Connecting Rods, Propeller Hubs, Gears, Drive shafts, Landing gear parts and heavy duty parts of rock drill

Steel Product: