Quality Characteristics Of Stainless Steel
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Project |
Basic Organization |
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Representative steel grade |
STS304 |
STS430 |
STS410 |
|
Heat treatment |
Solidification heat treatment |
Annealing |
Annealing followed by rapid cooling |
|
Hardness |
Work hardenability |
Minor hardenability |
Minor hardenability |
|
Main applications |
Interior and exterior decoration of buildings, kitchen utensils, chemical scales, aerospace machinery. |
construction materials, automobile parts, electrical appliances, kitchen utensils, lunch boxes, etc. |
Brazing and knife machine parts, hospital utensils, surgical appliances. |
|
Corrosion resistance |
High |
High |
Medium |
|
Strength |
High |
Medium |
High |
|
Processability |
High |
Medium |
High |
|
Magnetism |
Non-magnetic |
High Magnetism |
High Magnetism |
|
Weldability |
High |
Medium |
Low |
|
Application |
Target product |
Processing process |
Required quality characteristics |
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Surface quality |
BQ |
material |
shape |
thickness tolerance |
weldability |
corrosion resistance |
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|
Shallow processing |
Knives, forks, etc. |
Unloading → cross extension → cutting head → molding → polishing → cleaning → packaging |
Highly demanded, no defects such as pitting |
Good |
General material |
General |
-5% |
Not required |
Good |
|
Deep Processing |
Type II cutlery, thermos cups, etc. |
Unloaded material → oiling → molding → (sometimes several times) cutting → crimping → cleaning → re-bottomed → polishing → welding handle → packaging |
Highly demanded, no defects such as scratches and creases |
Good |
DDQ |
Highly demanded |
-2.95 |
Good |
Good |
|
PIPE |
Decorative Pipe, etc. |
Narrow strip → extrusion press molding → butt welding → grinding of weld seams → cutting of pipe → grinding → polishing → packaging |
Highly demanded, no defects such as creases and other defects |
General |
General material |
Good |
-8% |
Good |
General |
|
Cookware |
Exterior walls of refrigerators, etc. |
Unloading → bending → welding → polishing |
Highly demanded, no defects such as creases and other defects |
General |
General material |
General |
-8% |
Good |
General |
|
Container |
Water heater water dispenser inner liner |
Narrow strip → Roll → Welding → Cutting → Welding → Grinding → Packing |
General |
General |
General material |
General |
-10% |
Good |
General |