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Chemical composition and mechanical properties of stainless steel coils | |||||||||
Grade | ChemicalComposition(%) | Mechanieal Performece | |||||||
C | Si | Mn | P | S | Ni | Cr | Mo | Hardness | |
201 | ≤0.15 | ≤1.00 | 5.5/7.5 | ≤0.060 | ≤0.030 | 3.5/5.5 | 16.0/18.0 | - | HB≤241,HRB≤100, HV≤240 |
304 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 8.0/11.0 | 18.00/20.00 | - | HB≤187,HRB≤90,HV≤200 |
316 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 10.00/14.00 | 16.0/18.0 | 2.00/3.00 | HB≤187, HRB≤90 HV≤200 |
316L | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.03 | 10.00/14.00 | 16.0/18.0 | 2.00/3.00 | HB≤187, HRB≤90 HV≤200 |
410 | ≤0.15 | ≤1.00 | ≤1.25 | ≤0.060 | ≤0.030 | ≤0.060 | 11.5/13.5 | - | HB≤183, HRB≤88 HV≤200 |
430 | ≤0.12 | ≤1.00 | ≤1.25 | ≤0.040 | ≤0.03 | - | 16.00/18.00 | - | HB≤183, HRB≤88 HV≤200 |
1.2BFinished by heat treatment , picking or equipvalent cold rolling , followed by skin pass to obtain adequate luster surface.
2.BAsurface finished is Bright heat treatment after cold rolling.
3.No.4, also called #4, satin or directional finish, is an unidirectional finish obtained with a 100-400 grit abrasive depending on requirements. High grit numbers create finer polishing lines and more reflective finishes.
4.Hairline referred to as "the HL",it's grain as fine as hair, straight and continuous, delicate with oil paints on the surface. It has slightly lower reflective rate than satin stainless steel.
5.Mirror finishis produced by progressively using finer abrasives and finishing with extremely fine buffing compounds. Mirror finish is also called 8K, No.8 and polish finish, which is the most reflective mirror finish with high quality to similar as glass mirror. The final surface is blemish free with a high degree of image clarity and is the true mirror finish.
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