abc® Aalco is a registered trademark of Aalco Metals Ltd
© Copyright: Aalco Metals Ltd, The Hersham Centre, Hersham Green, Hersham, Surrey KT12 4HP
All Data is indicative only and must not be seen as a substitute for the full specification from which it is drawn.
In particular, the mechanical property requirements vary widely with product form and product dimensions.
For more complete details please refer to the relevant specification – The BS EN Specifications for Stainless Steel
are listed on a separate Datasheet.
Stainless Steel Grade 430 / 1.4016
Stainless steel type 1.4016 is also
commonly known as grade 430. Type
430 stainless steel combines good
corrosion resistance with good
formability and ductility.
It is a ferritic, non-hardenable plain
Chromium stainless steel with
excellent finish quality.
Grade 430 also has excellent resistance
to nitric attack, which makes it well
suited to use in chemical applications.
The most popular applications for 430
are in domestic appliances and
decorative trim.
Property data given in this document is
typical for flat rolled products covered
by ASTM A240/A240M. ASTM, EN or
other standards may cover products
sold by Aalco. It is reasonable to
expect specifications in these
standards to be similar but not
necessarily identical to those given in
this datasheet.
Applications
Grade 430 stainless steel is typically used
in:
Low cost sinks
Decorative trim
White & Brown Goods (washing
machines, dishwashers, cookers
Refrigerators
Stove element supports
Scientific apparatus
Fasteners
Flue linings
Typical Chemical Composition
% 430
C 0.12max
Mn 1.00
Si 1.00
P 0.04
S 0.03
Cr 16-18
Ni 0.75max
Typical Mechanical Properties
Grade 430
Tensile Strength (MPa) 450
Proof Stress 0.2% (MPa) 205
Elongation A5 (%) 22
Hardness Rockwell B (HR B) 89max
Typical Physical Properties
Property Value
Density 7.75 g/cm3
Melting Point 1425-1510°C
Modulus of Elasticity 200 GPa
Electrical Resistivity 0.060x10-6 Ω.m
Thermal
Conductivity
23.9 W/m.K at
100°C
Thermal Expansion 10.4x10
-6 /K at
100°C
Alloy Designations
Grade 430 stainless steel also corresponds
to the following standard designations and
specifications:
Euronorm UNS BS En Grade
1.4016 S43000 430S17 60 430
Corrosion Resistance
Type 430 stainless steel has good corrosion
resistance to a large variety of media
including nitric acid and some organic acids.
The corrosion resistance of type 430 is
optimal when it has a highly polished
surface. As with other ferritic grades,
resistance to stress corrosion cracking is
very high.
Heat Resistance
Grade 430 stainless steel has good
resistance to oxidation in intermittent
service to 870°C and in continuous service
to 815°C. After prolonged heating at 400-
600°C, type 430 stainless steel may
become brittle and require annealing.
abc® Aalco is a registered trademark of Aalco Metals Ltd
© Copyright: Aalco Metals Ltd, The Hersham Centre, Hersham Green, Hersham, Surrey KT12 4HP
All Data is indicative only and must not be seen as a substitute for the full specification from which it is drawn.
In particular, the mechanical property requirements vary widely with product form and product dimensions.
For more complete details please refer to the relevant specification – The BS EN Specifications for Stainless Steel
are listed on a separate Datasheet.
Fabrication
Fabrication of all stainless steels should be
done only with tools dedicated to stainless
steel materials. Tooling and work surfaces
must be thoroughly cleaned before use.
These precautions are necessary to avoid
cross contamination of stainless steel by
easily corroded metals that may discolour
the surface of the fabricated product.
Cold Working
Stainless steel grade 430 is readily cold
workable but is not quite as ductile as 304
stainless. The advantage of 430 over 304 is
that the 430 does not work harden to the
same extent.
Hot Working
Fabrication methods, like forging, should
occur after uniform heating to 816-1038°C.
The component should then be air cooled to
room temperature and annealed. Grain
growth will occur due to prolonged
exposure to forming temperatures. This
should be avoided as excessive grain
growth can cause an ‘orange peel’ texture
on the surface of the material. As grade
430 is commonly used in aesthetic
applications, surface finish is extremely
important.
Heat Treatment
Type 430 stainless steel cannot be
hardened by heat treatment.
Annealing is done by heating to 815°C,
soaking for 30minutes per 25mm of
thickness, furnace cooling to 600°C, then
quickly air-cooling.
The component will become brittle if slow
cooled from 540-400°C.
Welding
Grade 430 can be readily welded by all
fusion methods but preheating to 150-
200°C is recommended. Annealing at 790-
815°C can relieve embrittlement of the
heat-affected zone.
Depending on the application,
recommended filler rods or electrodes are
grades 430, 308L, 309 310, or 312
stainless steels.
Machinability
Type 430 stainless steel is relatively easily
machined. Machining can be enhanced if
the following rules are adhered to:
Cutting edges must be kept sharp. Dull
edges cause excess work hardening.
Cuts should be light but deep enough to
prevent work hardening by riding on the
surface of the material.
Chip breakers should be employed to
assist in ensuring swarf remains clear of
the work
Low thermal conductivity of austenitic
alloys results in heat concentrating at
the cutting edges. This means coolants
and lubricants are necessary and must
be used in large quantities.
Supplied Forms
Stainless steel grade 430 is typically
supplied by Aalco as:
2R (BA) finished sheet
Polished sheet
Square, Rectangular and round tube
This information is based on our present
knowledge and is given in good faith.
However, no liability will be accepted by the
Company is respect of any action taken by
any third party in reliance thereon
As the products detailed may be used for a
wide variety of purposes and as the
Company has no control over their use; the
Company specifically excludes all conditions
or warranties expressed or implied by
statute or otherwise as to dimensions,
properties and/or fitness for any particular
purpose. Any advice given by the Company
to any third party is given for that party’s
assistance only and without liability on the
part of the Company.
Any contract between the Company and a
customer will be subject to the Company’s
Conditions of Sale. The extent of the
Company’s liabilities to any customer is
clearly set out in those Conditions; a copy
of which is available on request.