The chromium content of ferrite stainless steel is from 15 to30%, it seldom contains nickel, but has a little Mo, Ti, and Nb. It has unique characteristics such as high thermal conductivity, a small coefficient of expansion, good oxidation resistant, and excellent stress corrosion resistance. Ferritic stainless steel grades like 430 stainless steel are known to possess very excellent corrosion resistance. 430 grade is highly resistant to a lot of substances like nitric acid and organic acids. 430 sheets of steel have maximized corrosion resistance in buffed and well-polished conditions.
Its crevice corrosion and pitting resistance are quite similar to 304 stainless steel grade. 430 steel is a high-sulfur-free machining grade. So their pitting and crevice corrosion resistance are lesser compared to non-free machining grades. When it comes to machinability, 430 stainless sheets of steel are easier than any other standard austenitic steels – but there can be a tendency of galling. In an annealed condition, 430 steel grade is easier to machine.
ASTM A240/JIS Standard 4304
3.1 MTC is available once order confirmed，all of our products are conformed with JIS G4304 and ASTM A240 standard.
ASTM A240 Chemical Standard
|Steel Grade||Ni% Max.||Cr% Max.||C% Max.||Si% Max.||Mn% Max.||P% Max.||S% Max.||Mo% Max.||Ti% Max.||Other|
|S30400||8.0~10.5||17.5~19.5||0.07||0.75||2||0.045||0.03||–||–||N: 0.1 Max.|
|S30403||8.0~12.0||17.5~19.5||0.03||0.75||2||0.045||0.03||–||–||N: 0.1 Max.|
|S31603||10.0~14.0||16.0~18.0||0.03||0.75||2||0.045||0.03||2.0~3.0||–||N: 0.1 Max.|
ASTM A240 Mechanical Standard
|Steel Grade||N/mm 2 MIN.||N/mm 2 MIN.||% MIN.||HRB MAX.||HBW MAX.||Bendability:||Bendability:|
|Tensile Stress||Proof Stress||Elongation||Hardness||Hardness||Bending Angle||Inside Radius|
|BD||Bright drawn||SRE||Slit rolled edge|
|CG||Centreless ground||HF||Hot finished|
|CF||Cold finished||HRAP||Hot rolled annealed and pickled|
|P&T||Peeled and turned||RT||Rough turned/peeled|
|ST||Smooth turned||PR||Peeled and reeled|
Size & Tolerance
Type SIZES (mm) SIZES (Inches) ISO Tolerance
Cold Drawn and Polish 3.00 – 75.00 1/8″ – 3.00″ h8-h9-h10-h11
Cold Drawn and Ground 10.00 – 75.00 5/6″ – 2.50″ h8-h9-h10-h11
Peeled and Polished 40.00 – 150.00 1.50″ – 6.00″ h11, h11-DIN 1013
Peeled and Ground 20.00 – 50.00 3/4″ – 2.00″ h9-h10-h11
Raw material test
All the raw material has been selected from certified raw material suppliers.
Surface defects are the most common problem for stainless steel round bar, all of our bars have been checked by the latest automatic camera to ensure the quality.
Bar package and loading has many details. with years experience, we can offer wooden box package and strong PVC package.