Composition and properties

Steel AISI 430 °F (1.4105) is a low-carbon alloy based on iron, ferrite class, which has increased wear resistance when working in harsh oxidizing environments, including acids and corrosive gases. The resistance is maintained at external temperatures up to 850...⁹⁰⁰⁰ C.

According to UNC classification, the steel in question includes the following alloying components:

Chemical element	Iron	Chrome	Manganese	Silicon
Percentage content	79,2...83,9	16...18	Up to 1.3	Up to 1.0

As unavoidable metallurgical impurities in the steel may be present sulfur (in the amount of 0.15 ... 0.35%), as well as phosphorus (not more than 0.06%).

Rolled sheets of the considered steel grade are characterized by the following physical and mechanical parameters:

• Density, ^g/cm3 - 7.7;
• Modulus of elasticity, GPa - 220;
• Relative electrical resistance, ohmm - ^6x10-10;
• Relative elongation, % - 23;
• Heat capacity, J/kg K - 460;
• Thermal diffusion coefficient,^m2/s- 7.1.

As compared to its nearest analogue - stainless steel S20621, this material is less ductile, which is explained by the absence of nickel and molybdenum in its chemical composition, but the high content of manganese. But steel AISI 430 °F (1.4105) favourably differs by the reduced rates of specific thermal conductivity, which allows the blanks, obtained from the sheet or strip to successfully resist the sharp temperature changes.

Applications

Steel AISI 430 °F (1.4105) before selling is subjected to full quality metallographic control, the order and procedure of which are specified in ASTM A473 (determines the percentage and structure of principal components) and ASTM A939 (specifies the effect of temperature, external pressure and atmospheric composition on the structural stability of the alloy).

This alloy tape and plate is used in the manufacture of one-piece and fully welded piping structures designed for pumping liquid and gaseous media at high temperatures. The annealed material lends itself well to forming operations of cold sheet forming - bending, drawing, flanging - and the presence of sulphur gives good quality at the dividing transitions of stamping - punching and notching. The presence of sulfur also helps to reduce the intensity of surface corrosion

The closest domestic analogue of steel AISI 430 °F (1.4105) is mild steel grade 08X18H10, which differs the presence of nickel (up 10%).

It is reasonable and profitable to buy sheet and/or strip of AISI 430 °F (1.4105) steel from Evek GmbH, because all the offered products are certified and meet all international quality standards.