Are there 10.9 grades of stainless steel screws?
No Stainless steel can not reach such high strength, only high-strength steel after heat treatment can achieve such intensity.
Bolts of grade 8.8 and above are made of low carbon alloy steel or medium carbon steel and treated by heat treatment (quenching and tempering). They are commonly called high strength bolts (wires).
304M, 304HC and 316 three kinds of materials are the 300 series of austenitic stainless steel is one of the most widely used materials, stainless steel standard parts of the main characteristics of corrosion resistance, beauty, health.
Stainless steel screw, its strength and hardness are normal, equivalent to 6.8 grades of carbon steel screws, generally less than 10.9.
