400 Series Stainless Steel
The 400 series group of stainless steel has an 11 percent chromium and 1-percent manganese increase, above the 300 series group. The 400 series is susceptible to rust and corrosion under some conditions.
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The 400 series includes both ferritic and martensitic steel. Heat-treating will harden the 400 series. The 400 series of stainless steel have higher carbon content, giving it a martensitic crystalline structure. This provides high strength and high wear resistance.
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Martensitic stainless steel aren’t as corrosion resistant as the austenitic types. Ferritic steel is non-hardening steel, ideal for conditions in elevated temperatures. Martensitic steel can be hardened, ideal for a wide variety of common uses.
Available Forms
Forms
Coils
Sheets
Plates
Pipes (Box)
Pipes (Round)
Bars (Round)
Bars (Flat)
Bars (Hex)
Thickness (mm)
0.3 - 8.0
0.3 - 3.0
3.0 - 50.0
1.0 - 10.0
1.0 - 50.0
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3.0 - 50.0
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Length (mm)
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2500 / 3000 / 5000 / 6000 / 6300
2500 / 3000 / 5000 / 6000 / 6300
6100
5000 - 6000
5000 - 6000
5000 - 6000
5000 - 6000
Dia (inch/mm)
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-
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10mm x 10mm - 200mm x 200mm
1/8" - 16" NB
10mm - 200mm
10mm x 10mm - 100mm x 100mm
10mm x 10mm - 100mm x 100mm
Width (mm)
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590 / 625 / 790 / 1000 / 1250 /
1500 / 2000 / 2500 / 3500
1250 / 1500 / 2000
1250 / 1500 / 2000
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-
-
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Application
Some examples of industry applications include:
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Agricultural equipment
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Automotive exhaust system components, Motor Shaft
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Food industry equipment
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Hardware & Surgical cutting tools
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Bearings, knives, and razor blades
Chemical Composition (max)
409
410
430
430SM
Ni
0.50
0.60
0.75
0.75
Cr
11.7
13.5
18.0
14.0
N
0.03
0.00
0.00
0.00
Mn
1.0
1.0
1.0
0.5
C
0.03
0.08
0.12
0.015
S
0.02
0.03
0.03
0.03
P
0.04
0.04
0.04
0.04
Si
1.0
1.0
1.0
1.0
Ti
0.50
0.00
0.00
0.00
Sizes & Specification
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