, AISI 6150, DIN 1.8159 51CRV4 Spring Steel Rods

• Customization: Available
• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Model NO.: MD-8101650444003720
• Technique: Hot Rolled
• Application: Spring Steel
• Surface Treatment: Peeled
• Alloy: Alloy
• Special Use: Spring Steel
• Size: 16mm-1000mm
• Length: 2m,3m,5.8m, 6m, 8m or as Required.
• Delivery Time: 7-30 Days
• Loading Port: Shanghai
• MOQ: 1 Tons
• Certificate: ISO, BV, SGS, Mill Test Certificate
• Packaging Detail: Standard Sea-Worthy Package
• Surface: Peeled, Polish
• Price Term: Ex-Work, Fob, CFR, CIF, etc.
• Specifications: Flat Bar, Round Bar, Angle Bar, Square Bar
• Transport Package: Standard Sea-Worthy Package
• Specification: 16mm-1000mm
• Trademark: Kingmetal
• Origin: China (Mainland)
• Production Capacity: 800tons/Month

Product Description

AISI 6150, DIN 1.8159 51CrV4 Spring Steel rods

 

51CrV4 /DIN 1.8159 is a Medium carbon alloy spring steel as per European Standard EN10083.It has good mechanical properties and process properties with high hardenability.In addition, the addition of vanadium element refines the grains,reduces the overheating sensitivity, improves the strength and toughness.

51CrV4 steel has high fatigue strength and high yield ratio.When the operating temperature is 300ºC, its elasticity can still be maintained. The cutting performance is still good,but the plasticity is low during cold deformation,and the weldability is poor.
 

51CrV4/DIN 1.8159  STEEL CHEMICAL COMPOSITION

Grade	C	Si	Mn	P	S	Cr	Mo
51CrV4/1.8159	0.47-0.55	≤0.4	0.7-1.1	≤0.035	≤0.035	0.9-1.2	0.10-0.25
6150	0.48-0.53	0.15-0.35	0.7-0.9	≤0.035	≤0.04	0.8-1.1	≥0.15

51CrV4/DIN 1.8159 STEEL RELATED STANDARD & EQUIVALENT GRADE

China/GB 3077: 50CrVA

USA/ASTM A29: 6150

Japan/JIS G4801:SUP 10

UK/BS 1429:735A50
 

51CrV4/DIN 1.8159 STEEL FORGING

• Initial Forging Temperature:1180ºC
• Final Forging Temperature:850ºC
• Forging Ratio:above 4:1
• Post-Forging Treatment: 51CrV4 Steel should be cooled as slowly as possible after forged.As a white point sensitive steel,the recommended method is to do furnace annealing after forged.

51CrV4/DIN 1.8159 STEEL OPERATING TEMPERATURE

Allowable maximum operating temperature:250-300ºC

51CrV4/DIN 1.8159 STEEL HEAT TREATMENT

• High Temperature Tempering(softening):640-700ºC
• Stress Relief Tempering

	Heating temperature,ºC	Cooling
Hot Rolled Spring	400-500	Water/Oil
Cold Drawn Spring Wire	315-370	Air

• Normalizing:850-880ºC
• Annealing: 810-870ºC

51CrV4 Steel Mechanical Properties in Normalizing and Annealing Conditon

	Tensile Strength	Yield Strength	Elongation	Reduction of Area	Impact Charpy-V	Hardness
Normalizing	770Mpa	550Mpa	20%	63%	36	288HBW
Annealing	680Mpa	450Mpa	24%	63%	70	197HBW

• Quenching:850-890ºC,Oil quench
• Tempering:400-500ºC

51CrV4 Steel Tempering Temperature Vs Hardness

Grade	Quenching		Tempering Temperature,ºC
	Temperature,ºC	Hardness	150ºC	200ºC	300ºC	400ºC	500ºC	550ºC	600ºC	650ºC
51CrV4	860ºC	56-62	56	55	51	45	39	35	31	28

51CrV4 Steel Mechanical Property with Quenched and Tempered Condition

Quenching Temperature	Quenching Medium	Tempering Temperature	Tensile Strength Mpa	Yield Strength Mpa	Elongation %	Reduction %	Charpy Impact J
850ºC	Oil	500ºC	≥1300	≥1150	≥10	≥40	/

51CrV4/DIN 1.8159 STEEL APPLICATION

51CrV4 steel is used as a particularly important coil spring of various sizes that is subject to high stress, and can also be used as an important spring with large cross-section and working below 300 ° C, such as various valve springs, fuel injector springs