Basic information of the steel

Stainless steel is a high alloy steel, that against corrosion in air or chemical corrosion, which is with a beautiful surface and with good corrosion resistant performance. It do not have to go through surface treatment such as plating color, and play the stainless steel inherent surface properties, one of the steels used in many aspects of, often called stainless steel. Represents the properties of 13 steel, chromium nickel steel and high alloy steel 18-8.
Material: stainless steel series: SUS200 series-chromium-nickel manganese austenitic stainless steel (201202); SUS300 series-chromium-nickel austenitic stainless steel (304, 304 L, 316, 316 L, 301, 302, 303, 321, 904, 904 L, 2014, 2520, etc.). Stainless iron series: 00 Cr12, 0 Cr12, 00 Cr13, 0, 1, 2 Cr13 Cr13 Cr13, 3 Cr13, 4 Cr13, 0, 1 Cr17 Cr17, Y1Cr13 (416), Y1Cr17 (430 F), etc.
3 series
     316 L stainless steel rod: 316 stainless steel containing molybdenum and low carbon content, in the ocean and chemical industry environment of corrosion resistance points better than 304 stainless steel ability greatly! (316 L low carbon, 316 N nitrogen high strength and high, 316 F high sulphur content in stainless steel, easy cutting stainless steel.
     304 L stainless steel rod: as low carbon steel 304, be in usually, corrosion resistance and 304 similar, but after welding or in eliminating stress, the effects of outstanding ability corrosion resistance, heat treatment in not, also can maintain good corrosion resistance.  
     304 stainless steel rod: has good corrosion resistance, heat resistance, low temperature strength and mechanical properties, stamping, bending and hot machining is good, without heat treatment hardening phenomenon. USES: tableware, ambry, boiler, auto parts, medical instruments, building materials, food industry (using temperature-196 ° C-700 ° C).  
     310 stainless steel bar: the main features are: high temperature resistant, use commonly boiler, car exhaust. Other performance in general.
303 stainless steel rod: by adding a small amount of sulfur and phosphorus that it has 304 more cutting processing, other performance and and 304 similar.
302 stainless steel rod: 302 stainless steel bars and widely used in automotive parts, aviation, aerospace hardware tools, chemical industry. Specific as follows: arts and crafts, bearing, slip flower, medical instrument, electrical appliances, etc. Characteristics: 302 stainless steel ball belongs to the austenitic steel shape, and close to 304, but the hardness of some 302 higher, HRC than 28, have good rust and corrosion.  
     301 stainless steel rod: good ductility, used for forming products. Also through mechanical processing make its rapid sclerosis. Welding the gender is good. The abrasion resistance and fatigue strength is better than the 304 stainless steel.   302 stainless steel ball belongs to the austenitic steel shape, and close to 304, but the hardness of some 302 higher, HRC than 28, have good rust and corrosion.
304 (18 Cr-8 Ni) material: as a kind of extensive use of steel, has good corrosion resistance, heat resistance, low temperature strength and mechanical characteristics; Hot stamping, bending, nature is good, without heat treatment hardening phenomenon (no magnetic and then use temperature 196 ℃ ~ 800 semen-℃). USES: household (1, 2 class tableware, cabinets, interior pipeline, water heater, boiler, bath crock), auto parts (windshield wipers, muffler, mould products), medical appliances, building materials, chemical, food industry, agriculture, Marine parts.
200 stainless steel series: 201, 202, chromium, nickel, mn-austenitic stainless steel)
300 stainless steel series: 301, 302, 302 HQ, 303, 304, 304, 304 F, L, 316,, and 304 HC 316 L, 316 F, 316 S, 316 Ti, 310, 310 S, 314, 314 L, 317, 317 L, 321 (chromium and nickel-austenitic stainless steel)
400 stainless steel series: 410, 420, 420 J2, 430, 430 F, 431 (ferritic and martensite stainless steel) note: L represents the low carbon, such as 304 L-304 low carbon content. H and S representative resistance to high temperature, such as the 310 S than the 310 high temperature resistant sex strong, 304 H-304 heat-resistant.
4) classification and grading standards.
4-1 classification:
The national standard GB YB and local standards and enterprise standards in the industry Q/CB
4-2 classification:
Basic standard and standard of packaging product standard.
The 4-3 standard level (three points):
Y: international advanced level I: the general level of H: the domestic advanced level
4-4 GB
GB1220-84 stainless steel bar (I) disk Park welding of GB4241-84 stainless steel (H grade)
Pan Yuan welding of GB4356-84 stainless steel (I grade) of GB1270-80 stainless steel pipe (I)
GB12771-91 stainless steel pipe (Y) GB3280-84 stainless steel cold (class I)
GB4237-84 stainless steel hot plate (I) GB4239-91 stainless steel cold strip (I)