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Oil-hardened wire

Oil-Hardened Springs

Oil-hardened springs: the core of resilience and durability

A thorough exploration of the properties and applications of oil-hardened wire

Oil-hardened wire, also known as ASTM A229, has excellent durability, fatigue and resistance to relaxation. Oil-hardened wire is both cheaper and thicker, and has good impact resistance.

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Technical Specification: Oil-hardened
Nominal Composition: C: 0.55 – 0.85 Mn: 0.30 – 1.2 Fe: 98.29
Density: 0.284 lb./in3
Elasticity modulus (E): 29 x 103 ksi
Shear modulus (G): 11.6 x 103 ksi
Electrical Resistance: 170 µΩ.cm
Thermal Conductivity: 361 Btu/(hr/ft2/in/°F)
Minimum Size: 0.020 in (0.500 mm)
Maximum Temperature: 150oC (300oF)
Can be used for applications exposed to constant loads, such as garage door springs.

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