The meaning of SUS stainless steel

SUS is a Japanese stainless steel grade

The first letter S is Steel;

The second letter U is Use (Special Use);

The third letter S is Stainless.

The meaning of the number after SUS.

According to the AISI of the United States

Steel numbers are composed of three numbers: the first number indicates the type of steel, and the last two numbers indicate the sequence number.

The specific number series are:

2XX——Cr-Mn-Ni-N austenitic steel, XX is the serial number (the same below).

For example, "202" is austenitic stainless heat-resistant steel containing C≤0.15%, Mn≤10.0%, Si≤1.0%, Cr17%～19%, Ni4%～6%, N≤0.25%.

3XX-nickel-chromium austenitic steel. For example, "304L".

4XX-high chromium martensite and low carbon high chromium ferritic steel, For example, "430"

Letter suffixes after numbers, mainly include:

B: Bar, which means bar;

HP: Hot Plate, which means hot rolled plate;

CP: Cold Plate, which means cold rolled plate;

HS: Hot Strip, which means hot-rolled steel strip;

CS: Cold Strip, which means cold rolled steel strip;

WR: Wire, which means steel wire;

TP: Tube Pipes, which means steel pipes for pipelines;

TB: Boiler Heat Exchange Tube, which means steel pipe for heat transfer;

L: Low Carbon, which means low carbon;

N: Nitrogen, which means adding nitrogen;

J: Japan, which means Japan's unique steel grade.