18HGT - 20mncr5 - 18hgt round, rod, forging
Supplier — AvekGlob Company — offers at a reasonable price from the manufacturer a circle, rods, forgings, which are made of steel grade 18ХГт (20MnСr5, 18hgt). The supplier guarantees the timely delivery of products to any address specified by the consumer.
Low-carbon steel grade 18ХГТ (the nearest foreign analogues are steel 20MnСr5, 18hgt) is a structural steel alloyed with chrome, titanium and silicon. Abroad is also produced according to the AISI 1.7147 standard. It is well suited for chemical-thermal and conventional heat treatment, as a result of which it significantly increases the surface hardness and wear resistance in the sliding nodes. The presence of chromium and titanium increases the heat resistance of the material and resistance to impact loads, but reduces the ductility at room temperatures. Has good resistance to operation in non-aggressive environments.
Urgency of application
Due to the increased heat and wear resistance, including at elevated temperatures, 18ХГТ (20MnСr5, 18hgt) steel is used in the manufacture of parts of speed boxes and gears of metal cutting machines, piston rods, spindles, camshafts, gears and other mechanical controls.
According to the technical requirements of GOST 4543−91, the following elements are included in steel 18ХГТ (numerical data — in percent):
|0.17 — 0.23||0.17 — 0.37||0.8 — 1.1||up to 0,3||0.03… 0.09||up to 0.035||up to 0.035||1.1 — 1.3||up to 0.3|
Physical and mechanical properties
- density, kg / m 3 — 7800;
- melting point, 0 C -1460;
- coefficient of thermal expansion in the temperature range 20… 100 0 С, μm / deg — 10,1;
- Specific heat, J / ggrad — 497;
- modulus of elasticity, GPa — 206;
- coefficient of thermal conductivity in the temperature range 20… 100 0 С, W / mgrad — 37;
- Brinell hardness, НВ — 229;
- the limit of the temporary resistance, MPa — 980… 1120;
- yield strength, MPa −730… −885;
- Relative narrowing of the cross-sectional area. % — 50… 55;
- permissible tensile elongation,% — 9… 15.
Assortment and application features
The range of bars and forgings made of low-alloy structural steel 18ХГТ (20MnСr5, 18hgt) is produced in a wide range of cross-sections, sizes and lengths. Mechanical machinability and weldability are good. The material is insensitive to flocculation and slightly increases its brittleness after tempering. The temperature range of forging is 850… 1150 0 С.
Supplier — AvekGlob Company — offers to buy bar, round or forgings from structural steel 18ХГТ (20MnСr5, 18hgt) in the necessary assortment of cross-sections, configuration and length. 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.