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    Commonly used stainless steel grades andcharacteristics

    2014/8/7 Viewers:

    Commonly used stainless steel grades:

    Austenitic stainless steel: SUS303, SUS303Se, SUS303Cu, SUS304, SUS304L, SUS310S, SUS316, SUS316L and SUS316N

    Iron austenite stainless steel: SUS430, SUS430F, SUS410

    Martensite stainless steel: SUS416, SUS420F, SUS420J2, SUS440A, SUS430B

    Ph: precipitation hardening steel SUS630 17-4PH, 17 - 7PH, 1.4542

    Duplex stainless steel: 329J1、329J1L

    Special corrosion resistant alloy: NS series, GH series etc


    Series 200 - chrome - nickel - manganese Austenitic stainless steel

       200 series steel commonly used include: AISI 201, 202, 205, and India J1, J4 (Cu) and other costs are lower 25% than 304 grade, applicable to the general use of weak corrosive environment such as household utensils, kitchen utensils and appliances, interior decoration and so on, the poor welding performance. The recent development of 204 Cu (3%CU), compared with the grade 304 stainless steel, the strength is higher, cold working more excellent performance, corrosion resistance and the class of 304, likely to replace become widely used stainless steel 304 varieties.


    The 300 series - chrome - nickel  Austenitic stainless steel

    301, good ductility, used for forming products. Also can rapid hardening by mechanical processing. Good weldability. Abrasion resistance and fatigue strength is better than that of 304 stainless steel.

    With 304, 302 - corrosion resistance due to the carbon intensity of relatively high and better.

    303 - by adding a small amount of sulfur and phosphorus from 304 are more likely to machining.

    18/8-304 stainless steel. GB brand of 0 cr18ni9.

    309 - compared with 304 has better temperature resistance.

    After 316-304, the second to get the most widely used types of steel, mainly used in the food industry and surgical equipment, add molybdenum elements make it get a kind of corrosion resistant special structure. As compared with 304, it has a better ability to resist chloride corrosion and therefore as "Marine steel" to use. SS316 is usually used for nuclear fuel recycling equipment. 18/10 grade stainless steel usually also fits the application level.

    321 - except for adding the titanium reduces the weld material corrosion risk besides other performance similar to 304.

    Series 400 - ferritic and martensitic stainless steel

      Series 400, development trend for adding trace Nb, Ti, Cu, Al improve deep drawing, welding, corrosion resistance, antimicrobial properties and resistance to high temperature strength, etc., can be partly replacing level 304, main steel grade: SUS430LX, 430 jil, 444, 445 m2, NSS 477 m1, etc. TheUnited StatesandJapanhave been widely used in automobile exhaust tube (409, 410), washing machines (430), meal kitchen utensils and appliances, medical equipment, water heater, roof, wall, power plants, etc

    408, good heat resistance, weak corrosion resistance, 11% of Cr, Ni 8%.

    409 - the cheapest model (UK), usually used in automobile exhaust pipe, is a ferritic stainless steel (chrome steel).

    410 - martensite chromium steel (high strength), good wear resistance, corrosion resistance is poor.

    416 - added sulfur improved the processing properties of materials.

    420 - "rj" martensitic steel, such as the brinell high chromium steel stainless steel at the earliest. Also used in surgical tools, can do is very light.

    430 - ferritic stainless steel, decoration, such as for car accessories. Good formability, but the temperature resistance and corrosion resistance to poor.

    440 - high strength cutting steel, carbon is a bit high, after appropriate heat treatment can obtain higher yield strength and hardness can reach 58 HRC, belongs to the most hardened stainless steel. The most common application example is the "razor blade. There are three kinds of commonly used models: 440 a, 440 b, 440 c, and 440 f (processing).

    Series 500 - heat-resistant chrome alloy steel.

    Series 600 - martensitic precipitation hardening stainless steel.

      630 - the most common precipitation hardening stainless steel models, usually also called 17-4; 17%Cr, 4%Ni.

    Duplex stainless steel

    Duplex stainless steel is a high chromium and low nickel stainless steel, with good toughness and weldability of austenitic stainless steel and ferritic stainless steel of high yield strength and resistance to chloride stress corrosion, SAF 2205 maximum current consumption. Development trend of duplex stainless steel to reduce the nickel, enhance manganese and nitrogen. Representatives of the second generation of duplex stainless steel for avi stavros Larry LDX2101 developed by the company. Corrosion resistance equivalent to level 316, strength is twice the level 304, mechanical properties of grade 2205 and its potential application areas include: steel, bridge, the structure of the tank, vessel, train, water heater, etc