400 Series Stainless Steel

400 Series Stainless Steel

Stainless steel mainly composed of ferrite in use. The chromium content is
11%~30%, and it has a body-centered cubic crystal structure. This type of
steel generally does not contain nickel, and sometimes contains a small
amount of elements such as Mo, Ti, Nb, etc. This type of steel has the
characteristics of large thermal conductivity, small expansion coefficient,
good oxidation resistance, and excellent stress corrosion resistance. ,
water vapor, water and oxidizing acid corrosion parts. This type of steel
has the disadvantages of poor plasticity, significantly reduced post-weld
plasticity and corrosion resistance, which limits its application. The
application of out-of-furnace refining technology (AOD or VOD) can greatly
reduce interstitial elements such as carbon and nitrogen, so this type of
steel is widely used.

Martensitic stainless steel

Stainless steel whose mechanical properties can be adjusted by heat
treatment, in layman's terms, is a type of hardenable stainless steel.
Typical grades are Cr13 type, such as 2Cr13, 3Cr13, 4Cr13 and so on.
Hardness is higher after quenching, and different tempering temperatures
have different combinations of strength and toughness. It is mainly used for
steam turbine blades, tableware, and surgical instruments. According to the
difference in chemical composition, martensitic stainless steel can be
divided into two types: martensitic chromium steel and martensitic chromium-
nickel steel. According to the structure and strengthening mechanism, it can
also be divided into martensitic stainless steel, martensitic and semi-
austenitic (or semi-martensitic) precipitation hardening stainless steel and
maraging stainless steel.

Specification Of 400 Series Stainless Steel

Features Of Ferritic and Martensitic Stainless Steel Sheet
Ferritic stainless steels include grade 430 and contain only chromium as the
main alloying element. With a chromium content between 10.5-18%, they are
known for their moderate corrosion resistance and fabrication properties.
Manufacturability can be improved by alloy modification and is satisfactory
in grades such as 439 and 444. Ferritic stainless steels cannot be hardened
by heat treatment and are used in the annealed condition.

Ferritic stainless steel is magnetic. They are also less susceptible to
corrosion cracking. Solderability of thin-walled sections is acceptable but
degrades as part thickness increases.

Ferritic stainless steel is commonly used in: vehicle exhaust pipes, cooking
utensils, architectural decoration, household appliances.

Compared with ferritic stainless steel, high carbon and low chromium content
are the distinguishing features of martensitic stainless steel. Martensitic
stainless steel includes 410, 420 and other steel grades. They are magnetic,
have moderate corrosion resistance and poor solderability.

Martensitic stainless iron is usually used for: blades, cutlery, surgical
instruments, fasteners, etc.

There are many stainless steel manufacturers in China, but we are one of the
best choices for you.

Minimum Order: 1 packs

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