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303
Stainless 303 Product Guide
Applications | Specifications | Mechanical and Chemical Data | Tolerances
Overview
The main value of 303 stainless steel is its ease of machining, grinding, and polishing due to the presence of Sulphur in the alloy. However, this slightly does lower the corrosion resistance and toughness of the metal. But despite this, it remains a tough, austenitic stainless steel alloy. It is typically used in aircraft applications, machine parts, pump and valve parts, architectural applications, nuts, and bolts.
Common Trade Names
UNS S30300, AISI 303, Alloy 303, T303, T-303, SS2346, austenitic stainless steel
Other Resources
Safety Data Sheet | Weight Calculator | Mill Test Reports
Products
Purchase Hex Bar 303 | Rectangle Bar 303 | Round Bar 303 | Key Stock 303 | Sample Pack 303 | Sheet/Plate 303 | Square Bar 303
Applications
- Aerospace
- Machine Parts
- Pump and Valve Parts
- Architectural Design/Trim
- Nuts
- Bolts
Stainless 303 Specifications
ASTM | AMS |
|---|---|
| A895 | 5640 |
| Physical Properties 303 | |||||
| Annealed | |||||
|---|---|---|---|---|---|
| Density | 0.289 lb/in3 | ||||
| Ultimate Tensile Strength | 88.5 ksi | ||||
| Yield Tensile Strength | 34.4 ksi | ||||
| Shear Modulus | 11,000 ksi | ||||
| Shear Strength | 62 ksi | ||||
| Fatigue Strength | 33.9 ksi | ||||
| Hardness Rockwell | Brinell | B85 | 165 | ||||
| Elongation at Break Percentage | 44% | ||||
| Reduction of Area | 50.5% | ||||
| Modulus of Elasticity | 28,000 ksi | ||||
| Poisson's Ratio | 0.27 | ||||
| Machinability Percentage | 75% | ||||
| Melting Point | 2,550-2,590 °F | ||||
| Specific Heat | 1.1 x 10^-1 BTU/lb-°F | ||||
| Thermal Conductivity | 112 BTU-in/hr-ft^2-°F | ||||
| Electrical Conductivity | 2.4% IACS | ||||
|
Chemistry Information
|
|
Element |
Percentage |
| C | 0.15 max |
| Cr | 18 |
| Fe | 69 |
| Mn | 2 max |
| Ni | 9 |
| Mo | 0.6 max |
| P | 0.2 max |
| S | 0.15 max |
| Si | 1 max |
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