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BA finish 430 stainless steel coil

Introduction

Stainless steel grade 430 is a non-hardenable steel containing straight chromium, and belongs to the ferritic group of steels.

This steel is known for its good corrosion resistance and formability, coupled with practical mechanical

properties. It can be used in certain chemical applications due to its resistance to nitric acid.

Grade 430F stainless steel is usually provided in bar form to be used in automatic screw machines.

Grade 434 has similar properties as grade 430, although it is a molybdenum-bearing version. The molybdenum content enhances its corrosion resistance.

 

 

Chemical Composition

C<0.12%  Cr16-18%  Ni <0.6%   Mn<1.0%  Si <1.0%   P<0.04% S <0.03% 

Machining

The machin ability of stainless steel grade 430 is a lot easier than standard austenitic steels such

as grade 304 but there is a chance for galling. Lightly drawn bars  are easier to machine than bars

in the annealed condition. Grade 430F is easy to machine.

Fabrication

Stainless steel grade 430 has a low work hardening rate which enables easy bending and forming.

The low ductility rate, however, makes it difficult to perform very rigorous operations. It is possible

for grade 430 wire to handle rigorous cold heading. Sub-critical intermediate annealing may be required for extreme cold working.

 

Applications

The following are the applications for stainless steel grade 430:

Dish washer linings

Refrigerator cabinet panels

Element supports and fasteners

Stove trim rings and chimney liners

Automotive trim and lashing wires

The key application of grade 430F is in repeatedly used machined parts.

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