Supply spring steel SUP7 imported spring steel Japanese spring steel

规格：

0.35*300

表面：

光亮

硬度：

300-550

Steel strip material name●Characteristics and scope of application
It is a widely used silicon-manganese spring steel with slightly higher strength, elasticity and hardenability. It is suitable for making flat springs with larger loads or coil springs with wire diameters below 100 in the railway vehicle and automobile tractor industries. It is also suitable for making heat-resistant springs in non-corrosive media with working temperatures below ℃ and withstanding alternating loads and in Large and important coiled springs operating under high stress.
●Chemical composition
Carbon.～.Silicon.～
Manganese.～
Sulfur
Phosphorus
Chromium
Nickel
Copper
●Mechanical properties
Tensile strength&()
Yield strength&()
Elongation(%)
Reduction of area&(%)
Hardness hot rolling, cold drawing + heat treatment,
●Heat treatment specifications and metallographic structure
Heat treatment specifications: quenching ℃℃, oil cooling and tempering ℃℃ (for special needs, ℃).
Metallographic structure: tempered troostite.
●Delivery status Hot-rolled steel is delivered in a heat-treated or non-heat-treated state, and cold-drawn steel is delivered in a heat-treated state.
●Corresponds to national brands
Corresponds to British brands
Corresponds to domestic brands
Corresponds to German brands
Corresponds to British brands
Corresponds to French brands