12khn3a - 14nicr14 - 12hn3a round, rod, forging
Supplier — AvekGlob Company — offers at a reasonable price from the manufacturer a circle, rods, forgings, which are made of 12ХН3А steel (14NiСr4, 12hn3а). The supplier guarantees the timely delivery of products to any address specified by the consumer.
Low-carbon steel grade 12HN3A (the closest foreign analogues are the steel 14NiСr4, 12hn3a) is a high-quality constructional low-alloy steel that contains chromium and nickel. Steel has a fine-grained microstructure, which is completely preserved after heat treatment, and chromium increases the heat resistance of the material, and nickel — plasticity. The steel is well suited for chemical-thermal treatment — carburizing and nitrocarburizing, resulting in an optimal combination of surface hardness with a more viscous core. The ductility of steel due to the reduced percentage of sulfur and phosphorus allows it to be used in the processes of hot and cold deformation with high degrees of deformation.
Urgency of application
After quenching with subsequent tempering, steel 12ХН3А (14NiСr4, 12hn3а) can be used for manufacturing complex configurations of products operated at average values of workloads and speeds of mutual sliding — drive conical gears, wheel hubs, clutches of various drives, shafts, automobile and other highly loaded fasteners. Steel shows good performance at cryogenic temperatures up to -100 0 C.
According to the technical requirements of the standard GOST 4543−91, steel 12ХН3А includes the following elements (numerical data — in percent):
|0.09 — 0.16||0.17 — 0.37||0.3 — 0.6||2.75 — 3.15||to 0.025||to 0.025||0.6 — 0.9||up to 0.3|
Physical and mechanical properties
- density, kg / m 3 — 7820… 7840;
- melting point, 0 С -1610;
- coefficient of thermal expansion in the temperature range 20… 100 0 С, μm / deg — 11,8;
- specific heat, J / grad — 506;
- modulus of elasticity, GPa — 201;
- coefficient of thermal conductivity in the temperature range 20… 100 0 С, W / megade — 38;
- hardness according to Brinell, НВ — 217;
- limit of temporary resistance, MPa — 500… 930 (depending on the assortment);
- yield strength, MPa — 390… 680 (depending on the assortment);
- permissible tensile elongation,% — 11… 16.
Assortment and application features
The circle, rods and forgings made of alloy steel 12ХН3А (14NiСr4, 12hn3а) are manufactured in a wide range of cross-sections and configurations. Mechanical machinability and weldability are satisfactory. The material is sensitive to flocculation and is subject to temper brittleness. The temperature range of forging is 830… 1230 0 С.
Supplier — AvekGlob Company — offers to buy bar, circle or forgings from low-carbon structural steel 12ХН3А (14NiСr4, 12hn3а) in the required assortment of cross-sections, weight and configuration. Products can be bought at a price formed on the basis of European and world standards of production. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.