Alloy 08X18H10 is used in the form of a cold-rolled sheet and a tape of increased strength for various parts and structures welded by spot welding, as well as in the form of a thick sheet and grade for products subjected to heat treatment (hardening) or for working in environments that do not cause intergranular corrosion. They are used mainly in the form of a thin sheet and tape in the automotive industry, commercial engineering, for consumer goods, in architecture. Steel is well polished. Steel is smelted in electric arc furnaces.
The chemical composition of the alloy 08X18H10
C | Cr | Fe | Mn | Ni | P | S | Si |
---|---|---|---|---|---|---|---|
≤0,08 | 17-19,0 | Осн. | ≤2,0 | 9-11,0 | ≤0,035 | ≤0,020 | ≤0,8 |
- Density - 7.90 · 103 kg / m3.
- The temperature coefficient of linear expansion α · 106, K-1 is 16.5 at 20-100 ° C; 17.2 at 100-200 ° C; 17.7 at 200-300 ° C; 18.1 at 300-400 ° C; 18.3 at 400-500 ° C; 18.6 at 500-600 ° C; 19.0 at 600-700 ° C; 19.5 at 700-80 ° C; 19.7 at 800-900 ° C; 20.0 at 900-1000 ° C.
- The electrical resistance ρ · 106, Ohm · m is 0.8 at 20 ° C.
Corrosion resistance of alloy 08X18H10
According to GOST 7350-77, GOST 5582-72, GOST 4986-79, steel 08X18H10 should not be prone to intergranular corrosion when tested according to the methods AM and AMU GOST 6032-89 with the duration of exposure in control solutions for 24 and 8 hours, respectively. carried out on samples after heat treatment (hardening) GOST 5949-75 or in the delivery state, the rest of the standards.
In the hardened state, steel 08X18H10 in terms of corrosion resistance is similar to steel 08X18H10T.
Alloy welding 08X18H10
Weldability without restrictions: manual arc electrodes OZL-8, OZL-12 on a wire 02X19H9; contact and electroslag. Welded joints made by any method other than resistance welding are prone to intergranular corrosion. Therefore, it is recommended for them subsequent heat treatment-hardening.
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