Sheet, strip 18KH2N4MA - x19nicrmo4 - 1.6657
Supplier — AvekGlob Company — offers at a reasonable price from the manufacturer a sheet, strip, which are made of steel grade 18H2N4MA (x19NiCrMo4, 1.6657). The supplier guarantees the timely delivery of products to any address specified by the consumer.
Low-carbon steel grade 18H2N4MA (the closest foreign analogues are x19NiCrMo4, 1.6657) is a cemented structural steel alloyed with chromium, molybdenum, titanium and nickel. In Western Europe it is produced according to DIN EN 10084−1998. The presence in the steel of refractory metals increases its mechanical strength at elevated temperatures: the operating range of use is -70 0 C to +400 0 С.
Urgency of application
Steel grade 18H2N4MA (x19NiCrMo4, 1.6657) is widely used in control mechanisms and mechanical transmissions of ships, ground vehicles, aircraft, guided missiles, weapons systems. The use of this steel has a special effect in railway transport, in the construction of roads, bridges, pressure vessels, machine tools, other mechanical devices that have significant dimensions or cross-sections. In the power industry, the bearings of the steels under consideration are produced for boilers of turbines, bodies of pressure vessels,
According to the technical requirements of GOST 4543−91, 18Х2Н4МА steel comprises the following elements (numerical data — in percentages):
|0.14 — 0.20||0.17 — 0.37||0.25 — 0.55||4.0 — 4.4||to 0.025||to 0.025||1.35 — 1.65||up to 0.3||0.3−0.4||Up to 0.06|
Physical and mechanical properties
- density, kg / m 3 — 7940;
- melting point, 0 С -1600;
- coefficient of thermal expansion in the temperature range 20… 100 0 С, μm / deg — 10,5;
- specific heat, J / grad — 506;
- modulus of elasticity, GPa — 200;
- coefficient of thermal conductivity in the temperature range 20… 100 0 С, W / mgrad — 36;
- Brinell hardness, НВ — 241;
- limit of time resistance, MPa — 880… 1130 (depending on the heat treatment mode);
- yield strength, MPa — 640… 835 (depending on the heat treatment regime);
- permissible tensile elongation,% — 12… 15.
Assortment and application features
Litts and a strip of alloy steel 18Х2Н4МА (x19NiСrMo4, 1.6657) are produced in a wide range of cross sections and length. Mechanical machinability of steel is medium, weldability is poor. The material is sensitive to flock formation, but is not susceptible to brittleness after tempering. The temperature range of forging is 800… 1220 0 С.
Supplier — AvekGlob Company — offers to buy a sheet or strip, which are produced from low-carbon structural steel 18Х2Н4МА (x19NiСrMo4, 1.6657), in the required assortment of cross sections 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.