English    中文

# Austenitic stainless steel material online calculation tool

Category:

### App Description

Attribute input values ​​and click calculations for austenitic stainless steel materials. The result will be displayed.

Austenitic stainless steel has austenite, face centered cubic (FCC) crystal structure.

Steels containing certain alloying elements such as manganese and nickel at normal temperature and having a high austenite ratio are hardened by conventional heat treatment. They are not. Typical examples of austenitic steels include 18/8 stainless steel and 14% steel.

His formula is used to calculate the temperature MD30 at 50% austenite to martensite transformation will pass 0.30 true cold deformation. His formula can be used as:

MD30 = 551 - 462 * 9.2 * % % C Si - 8.1 * % - 13.7 * 29 * % % Cr Ni Mo 18.5 * 29 * 68 * % % copper 462 × % N - 1.42 * (GS [United States] - 8)

Divided into austenitic stainless steel, ferrite content to represent a specific standard value; used to replace ferrite. A parallel line of the number of ferrite bodies is assumed for the ferrite number FNA formula. FNA chrome equivalents include Ti as an additional element. The FNA nickel equivalent contains Cu and Co as additional elements. FNA can give the formula:

Creq = Chromium 1.5 Silicon Molybdenum Titanium + 2 + 0.5

Nieq = Ni+30(C + N)+ 0.5 + 0.5 + 0.5 Co Cu Mn

FNA = 3.34 - 2.46 - 28.6 Nieq Creq

### Usage example

Input data:

Carbon: 45

Silicon: 30

Manganese: 25

Chromium: 50

Click "Calculate" to output data

Md30 - Temperature: -2139 Celsius

Chromium equivalent / nickel equivalent: 0.095

Ferrite Number (FNA): -306 [a]

Anti-pitting equivalent (CPT): Cr+3.3Mo+20N=50