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Grade: AISI 303
Formula: Fe/Cr 18/Ni 9/Mn/Si
Form: Rod
Material: Stainless Steel
Commodity: Alloys
Diameter:
12mm
AISI 303 Stainless Steel Rod is a free-machining modification of 18-8 austenitic stainless steel, engineered for enhanced machinability, good corrosion resistance, and retained mechanical properties through the addition of sulfur. This alloy maintains austenitic toughness while allowing faster machining rates and improved tool life compared to conventional stainless steels. In rod form, it is widely used in precision machined components, fasteners, and fittings across aerospace, chemical processing, and instrumentation industries. Specific applications include valve stems, screw machine products, and high-precision shafts. In research, AISI 303 is studied for its strain-induced martensitic transformation under certain loading conditions, machinability optimization, and the effects of sulfur on inclusion morphology and fatigue behavior. Its balance of formability, corrosion resistance, and superior machinability ensures its role as a preferred stainless steel for complex, high-precision industrial and scientific applications.
Health hazard/Hazardous to the ozone layer
Serious health hazard
Tolerances
Rod
| Diameter | =<10mm | ±10% |
|---|---|---|
| Diameter | >10mm | ±5% |
Material Properties for Alloys
Mechanical Properties
| Element | Value |
|---|---|
| Elongation at break( % ) | 35 |
| Modulus of elasticity( GPa ) | 193 |
| Tensile strength( MPa ) | 500-1000 |
Electrical Properties
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 72 |
| Temperature coefficient( K⁻¹ ) | - |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 1455 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 16.3@100°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 17.3@20-200°C |
Physical Properties
| Element | Value |
|---|---|
| Density( gcm⁻³ ) | 8.03 |
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