What is the difference between stainless steel 303 and 304?
303 is a free-machining grade of 304 stainless steel that contains added sulfur or selenium. While 303 stainless steel still has strong corrosion resistance, for an added boost, 304 stainless steel is recommended.
Is 303 stainless steel expensive?
303 vs 304 stainless steel price Although the chemical composition of both alloys tends to be similar to each other, the cost of grade 303 stainless steel is higher than grade 304.
How strong is 303 stainless steel?
AISI Type 303 Se Stainless Steel, cold drawn, bar, tested at RT
| MECHANICAL PROPERTIES | METRIC | ENGLISH |
|---|---|---|
| Tensile Strength, Ultimate | 690 MPa | 100000 psi |
| Tensile Strength, Yield | 415 MPa | 60200 psi |
| Elongation at Break | 40% | 40% |
| Modulus of Elasticity | 193 GPa | 28000 ksi |
Is 303 stainless good?
Alloy 303 is a non-magnetic, austenitic stainless steel that is not hardenable by heat treatment. Like other austenitic grades, Alloy 303 demonstrates excellent toughness, although the sulfur does reduce this a little as well.
Can you weld 303 stainless steel?
Generally 303 is considered unweldable due to free machining alloys added. Which great increase the risk of hot cracking. Any techniques used to eliminate hot cracking would also be useful in reducing the cracking chances on 303. Such as a convex weld bead.
Is 303 stainless steel FDA approved?
The 3-A Sanitary Standards (1) restrict the use of 303 stainless steel, and expressly prohibit alloys containing lead, leachable copper or other toxic materials. Lower grade austenitic stainless steel alloys (e.g., AISI 100 and 200 Series) are generally not rec- ommended for use in food equipment.
Can you harden 303 stainless?
Grade 303 stainless steel cannot be hardened by heat treatment. Solution treatment or annealing can be done by rapid cooling after heating to 1010-1120°C.
Does 303 Harden?
Yes the 303 will work harden. You may also have trouble coating it because of the inclusions added to the steel to improve machinability. With a softer material you should use a harder abrasive (the bonding) and you should not get any abrasive embedded in the surface.