Alloy 08Cr18Th
Technical characteristics
Alloy 08Cr18Tch refers to chromium alloys of ferrite class. It is melted in open-arc electric furnaces. The alloy is produced in accordance with
The percentage composition of the alloy
| Ce | C | Al | Cr | P | Mn | Fe | S | Ti | Si |
|---|---|---|---|---|---|---|---|---|---|
| ≤0,1 | ≤0,08 | ≤0,1 | 17 - 19 | ≤0,035 | ≤0,8 | basis | ≤0,025 | 5-С-0,6 | ≤0,8 |
This alloy is hardened at tº up to 1000-1100ºC with further cooling in water and air. Such heat treatment contributes to the normalization of internal stresses in the alloy and increases the strength characteristics of parts.
Physical parameters
- Thermal conductivity is 25.2 W/(m - K);
- The modulus of elasticity is E 21.0 - 10-4 N/mm2;
- Specific heat capacity is 443 J/(kg - K);
- The density is 7.8 g/cm3.
- Coefficient of thermal linear expansion is α - 106, K-1 - 10.4;
- Specific electrical resistance is 0.38-0.39 Ohmxmm2/m- Specific heat capacity is 443 J/(kg - K);
- The saturation induction is 8-12 kGs.
Processing
Alloy 08Cr18Tch is easy to upset and forge. The possibility of processing by cold method is possible due to its high plasticity. This alloy is used for casting ingots, plates, strips, bars, sheets and wire. The alloy 08Cr18Tch processed in cold condition is deformed and hardened as steel 12Cr18H10T.
Main properties
Alloy 08X18Tch has high ductility and resistance to oxidation. It is easily deformed and deep-drawn, well welded, which allows using it in the same equipment as the austenitic chromium-nickel grades. Decreasing temperature does not cause the changes characteristic of cold brittleness. Biological inertness makes this steel popular in food processing. It is a stronger and harder material compared to 12X18H10T grade. Runaway colors are observed in the temperature range from 550 to 800 °C. Temperatures above 800 °C cause scale formation.
Corrosion rate
- In a humid ammonia and hydrogen sulfide atmosphere up to 0,005 mm/year;
- in a solution containing hydrogen sulfide of 2.5 g/l, less than 0.0135 mm/year;
- in an aqueous solution of ammonia (t° 20 °C) up to 0.006 mm/year; and at 90 °C up to 0.097 mm/year
- in a mixture of aliphatic hydrocarbons (t° 20-90 °C) up to 0.003 mm/year;
- in a solution of 10% sulfuric and nitric acids and phosphoric acid (40%), t° 85 °C.
Welding
Welding of 08X18Tch sheets with thickness from 0.8 to 4 mm is carried out by manual and automatic submerged arc welding, Kh25N13 wire rods or electrodes OZL-11 are used as an additive. With rapid cooling the best quality of the weld is achieved. To protect welds from intergranular corrosion, after welding a final heat treatment is necessary. If the thickness of the sheet is small, resistance welding can be used.
Supply
The supplier "Auremo" offers to buy 08Cr18Th steel. Wide choice of semi-finished products. Optimal price from the supplier. Buy today. For wholesale customers - preferential price. Buy in bulk or by installments.
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Auremo" company - supplier of certified rolled metal products in Eastern and Central Europe - sells alloy 08Cr18Tch. on the most favorable conditions. The experience of the supplier "Auremo" will allow you to buy any stainless alloy easily, the price is optimal. A wide selection of products is provided in the catalog. The price depends on the order volume and additional terms of delivery. For wholesale customers - the price is preferential. Contact experienced managers - will promptly help to buy the necessary products. We have the best price-quality ratio. We invite to partner cooperation. Auremo" company is a profitable supplier in this segment.
