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ASTM5160 Spring Steel

ASTM5160 Spring Steel

ASTM5160 Spring Steel
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ASTM5160 Spring Steel



Material Name


Material Name: 5160 Spring Steel
Execution standard:ASTM A29/A29M-04

Characteristics and scope of application


High strength, plasticity and toughness, hardenability is good, overheating sensitivity is lower than manganese steel, higher than martinel steel, decarburization tendency is smaller than martinel steel, temper brittleness is big. used for vehicle, tractor industry production of heavy load, high stress spring and large diameter spiral spring.


Chemical Composition


C Si Mn S P Cr Ni Cu
0.56～0.61 0.15～0.35 0.75～1.00 Below 0.040 Below 0.035
 0.70~0.90 Below 0.35 Below 0.25

Mechanical Property


Tensile strength
σb (MPa) 		Yield Strength
σs 0.2 (MPa)
Elongation
δ5 (％)
reduction of crosssection area
ψ (％)
                  Hardness
hot rolling                cold-drawn+heat treatment

Above 1225 Above 1078 Above 9 Above 20
 Below 321HB                    Below 321HB

specification of heat treatment and metallurgical structure


Specification of heat treatment : hardening 830～860℃  oil cooling; tempering 460～520℃

Delivery State


Delivery in heat treatment or non heat treatment state with hot rolled steel, and in heat treatment state with cold drawn steel.