material

SS types

Stainless steel 304

Material type: Metal, Corrosion resistant, Chemical resistant, High strength, Heat resistant, Non-magnetic
Stainless steel 304 is the most common stainless steel. It is essentially non-magnetic steel and it is less electrically and thermally conductive than carbon steel.It is wildly used because it easily formed in various shapes. It is machinable and weldable.

Material advantages

It has good corrosion resistance, heat resistance, low temperature strength and mechanical properties, good hot workability, such as stamping and bending, no heat treatment hardening, and no magnetism.

Recommended description

Widely used for industrial purpose, furniture & decoration industry and food & medical industry.
 

Properties

Name 
Tensile strength515 MPa
Yield strength205 MPa
Elongation40% – 60%
Modulus of elasticity193 GPa
Maximum service temperature925 °C
Thermal conductivity31.7 W/(m⋅°C)
Electrical resistivity70 μΩ*cm
Density7.93 g/cm3

Common applications

• Food processing equipment, particularly in beer brewing, milk processing & winemaking
• Kitchen benches, sinks, troughs, equipment and appliances
• Architectural paneling, railings & trim
• Heat Exchangers
• Woven or welded screens for mining, quarrying & water filtration
• Threaded fasteners
• Springs

Stainless steel 316/316L

Material type: Metal, Corrosion resistant, Chemical resistant, High strength, Heat resistant, Non-magnetic
The second most used stainless steel after 304, the general purpose austenitic stainless steel 316 has superior corrosion resistance particularly in chloride containing environments and good elevated temperature strength. The low carbon version 316L has even better corrosion resistance in welded structures.

Material advantages

SUS316 stainless steel has good plasticity, toughness, cold denaturation, and welding process performance. 316 has good high temperature strength, and 316L has poor high temperature performance, but its corrosion resistance is better than 316.

Recommended description

Stainless steel 316/316L has similar mechanical properties to 304, with higher corrosion and chemical resistance. Ideal for marine applications.
Properties
Name 
Tensile strength620 MPa
Yield strength310 MPa
Density8g/cm3
Modulus of elasticity205 GPa
Elongation at break30% – 50%
Hardness83 HRB
Maximum working temperature925 °C
Thermal conductivity17 W/(m⋅°C)
Electrical resistivity81 μΩ*cm
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Common applications

• Food preparation equipment particularly in chloride environments.
 
• Laboratory benches & equipment.
 
• Coastal architectural panelling, railings & trim.
 
• Boat fittings
 
• Chemical containers, including for transport.
 
• Heat exchangers
 
• Woven or welded screens for mining, quarrying & water filtration.
 
• Threaded fasteners
 
• Springs

Stainless steel 303

Material type: Metal, Corrosion resistant, High strength, Heat resistant
Stainless steel 303 has excellent toughness, but lower corrosion resistance than 304. Ideal for high volumes, due to its excellent machinability.

Material advantages

SUS303 is austenitic free-cutting stainless, wear-resistant and burning-resistant steel with good machinability, burning and corrosion resistance.

Recommended description

Stainless steel 303 is used in applications that require parts to be heavily machined.
Properties
Name 
Density8.03 g/cm3
Melting Point1455°C
Modulus of elasticity193 GPa
Electrical resistivity0.72 x 10^-6 Ω.m
Thermal conductivity16.3 W/m.K
Thermal expansion17.3 x 10^-6/K
Yield strength276 MPa
Tense strength621 Mpa
Common applications
• Nuts and bolts
 
• Screws
 
• Gears
 
• Aircraft fittings
 
• Bushings
 
• Shafts

Stainless steel 430

Material type: Metal, Corrosion resistance, Magnetic
Stainless steel 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.

Material advantages

Low price, good workability, good stress corrosion resistance, typical non-heat treatment hardenable ferritic stainless steel; low thermal expansion rate, excellent oxidation resistance.

Recommended description

Stainless steel 430 is one of the most widely used “non-hardenable” stainless steels. It has good corrosion resistance, formability, ductility and is magnetic in all conditions. It is well suited in chemical applications due to its resistance to nitric attack and is a very popular choice for domestic appliances and decorative trim.
Properties
Name 
Tensile strength685 MPa
Yield strength292 MPa
Elongation56%
Hardness, Rockwell B85
Modulus of elasticity197 GPa
Poisson’s ratio0.27-0.30
Melting Point Range2550-2650°F
Density7.86 g/cm3
Properties
Name 
Tensile strength586 MPa
Yield strength483 MPa
Density7750 kg/m3
Modulus of elasticity200 GPa
Elongation at break20% – 25 %
Hardness90 HRB
Maximum working temperature870 °C
Thermal conductivity26.3 W/(m⋅°C)
Electrical resistivity60 μΩ*cm

Common applications

• Dish washer linings
 
• Refrigerator cabinet panels
 
• Element supports and fasteners
 
• Stove trim rings and chimney liners
 
• Automotive trim and lashing wires

Stainless steel 201

Material type: Metal, Corrosion resistant, Chemical resistant, High strength, Heat resistant
Stainless steel 201, with certain acid and alkali resistance, high density, no bubbles, no pinholes, etc. It is a high-quality material for producing various case and strap bottom cover. Mainly used for decorative tubes, industrial tubes, some shallow stretched products.

Material advantages

It has good heat resistance, low temperature strength and mechanical properties, good hot workability, such as stamping and bending.

Material shortcomings

It tends to not be a good choice, however, for outdoor structural use, because it is susceptible to pitting and crevice corrosion from certain elements like salt water.
Properties
Name 
Tensile strength685 MPa
Yield strength292 MPa
Elongation56%
Hardness, Rockwell B85
Modulus of elasticity197 GPa
Poisson’s ratio0.27-0.30
Melting Point Range2550-2650°F
Density7.86 g/cm3

Common applications

• Food processing equipment, particularly in beer brewing, milk processing & winemaking
 
• Kitchen benches, sinks, troughs, equipment and appliances
 
• Architectural paneling, railings & trim
 
• Heat Exchangers
 
• Woven or welded screens for mining, quarrying & water filtration
 
• Threaded fasteners
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