303 Stainless Steel Machining
Stainless Steel Alloy 303 Machined Parts
Sunhy has a reputation for machining quality parts from 303 Stainless Steel. We can machine intricate parts on our CNC Swiss machines and CNC turning centers.
Stainless steel alloy 303 is a popular free-machining alloy (FMA), ideal for parts that require extensive machining. It offers good corrosion resistance, withstands heat well, and can be finished to a high polish. 303 is not magnetic.
303 has a machining cost factor of 2.7 when compared to steel 12L14. It can be annealed, but is not as ideal for welding as stainless steel 304. 303 does not respond to heat treatment, but can be cold worked to increase tensile strength and hardness.
Industries & Applications
- Bolts and nuts
- Gears
- Screws
- Shafts
- Aircraft components
View Our Stainless Steel Parts Gallery
Stainless Steel Cost Comparison
| Type | General Characteristics | Alloy | Common Applications | Tolerances for 1/2" Dia. | Material Cost Factor | Machining Cost Factor | Request a Quote |
|---|---|---|---|---|---|---|---|
| Stainless Steel | Designed for machining, non-magnetic | 303 | Electronic hardware, automotive, aerospace, medical instruments, and many applications requiring corrosion resistance | Cold finished +/- .002 | 1.9 | 2.7 | Quote >> |
Common Material Cost Comparison
| Type | General Characteristics | Alloy | Common Applications | Tolerances for 1/2" Dia. | Material Cost Factor | Machining Cost Factor |
|---|---|---|---|---|---|---|
| Steel | Designed for excellent machinability. Case hard only | 12L14 | Endless commercial products; probably more pounds used in turned products than any other material | Cold drawn 0 | 1 | 1 |
| Stainless Steel | Designed for machining, non-magnetic | 303 | Electronic hardware, automotive, aerospace, medical instruments, and many applications requiring corrosion resistance | Cold finished +/- .002 | 1.9 | 2.7 |
| Brass | Designed for machining | 2011 | Electronic hardware, endless commercial products | Cold finish +/-.0015 | 3.8 | .6 |
| Aluminum | Designed for machining | 2011 | Electronic hardware, endless commercial products | Cold finish +/-.0015 | 3.8 | .6 |
| Titanium | High strength, light weight, good bio-compatibility | Ti-6Al-4VEli | Medical implants | Ground & polished +/-.002 | 30.2 | 6 |
To review our Machining Materials Guide, please click here.
Stainless Steel 303 Characteristics
| TEMPER | Yield Strength (ksi) | Ultimate Tensile Strength (ksi) | Modulus of Elasticity (ksi) | Brinell Hardness (500km/10mm) |
|---|---|---|---|---|
| Annealed | 35 | 90 | 29,000 | 137 |
| Cold Drawn | 61 | 100 | 29,000 | 179 |
Stainless Steel Parts Gallery
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