Heat-resistant, relaxation-resistant steel in the Astm system.
Are you interested in heat-resistant, relaxation-resistant steel in the Astm system? Supplier Avek Global proposes to buy heat-resistant, relaxation-resistant steel of domestic and foreign production at an affordable price in a wide range. We will ensure the delivery of products to any point of the continent. The price is optimal
Application area
Heat-resistant and relaxation-resistant steels of foreign production are manufactured in accordance with ASTM standards. Correlation of steel to this class is made according to the test results. Supplier Avek Global proposes to buy heat-resistant, relaxation-resistant steel of domestic and foreign production at an affordable price in a wide range. We will ensure the delivery of products to any point of the continent. The price is optimal
Property evaluation technology
Bending stress relaxation tests are carried out on a corrosion-resistant steel tape such as AISI 301. The test data obtained from standard test pieces with a conical cantilever beam at temperatures from 23 ° to 93 ° C for 20,000 hours (2 years, 4 months) are compared with force relaxation data obtained from two complex clamping spring designs made of this material. A good correlation is obtained between the two sets of data. Simultaneously, the effects of thermal treatment of voltage drop and anisotropy on stress relaxation are studied. Finally, the stress relaxation behavior is compared with the reference alloy CA762 (12 percent nickel, the rest is silver). Both materials, if properly heat treated, should retain more than 98% of the initial voltage after 20,000 hours at 93 ° C in the «elastic» range.
Optimizing properties
The high-temperature relaxation resistance of steel is improved due to alloying of rolled steel and a certain heat treatment regime. High temperature resistance of relaxation, (for example, strength and hardness) of steel materials under normal conditions is improved, in particular:
- • resistance to softening under the influence of temperature increases with increasing Si content;
- • Dislocation density is reduced due to accumulation of carbides (Mo2 C) serving as inhibitors of dislocation migration.
- • the relaxation stability of the steel is improved by heat treatment, for example. hardening and tempering by plastic deformation at room temperature, and then at t ° 250 ° — 350 ° C.
In accordance with these criteria, a decision is made to classify steel as heat-resistant and / or relaxationally stable.
Buy. Supplier, price
Are you interested in heat-resistant, relaxation-resistant steel in the Astm system? Supplier Avek Global proposes to buy heat-resistant, relaxation-resistant steel of domestic and foreign production at an affordable price in a wide range. We will ensure the delivery of products to any point of the continent. The price is optimal. We invite you to partner cooperation.