Jis Steel Grades & Standards

Stock Thickness: 0.1-200.0mm
Production thickness: 0.5.0-200mm
Width: 600-3900mm
Length: 1000-12000mm
Grade:
200 series: 201,202
300 series: 301,304,304L,304H,309,309S,310S,316L,316Ti,321,321H,330
400 series: 409,409l,410,420J1,420J2,430,436,439,440A/B/C
Duplex: 329,2205,2507,904L,2304
Surface: No.1,1D,2D,2B,NO.4/4K/hairline,satin,6k,BA,mirror/8K

We have thousands tons stock of stainless steel sheet and coil with various size and grade,mainly include austenitic stainless steel, martens stainless steel (including precipitation hardened stainless steel sheet & coil), ferritic stainless steel, and duplex stainless steel.

Characteristics of Stainless Steel Sheet and Plate:
High corrosion resistance
High strength
High toughness and impact resistance
Temperature resistance
High workability, including machining, stamping, fabricating and welding
Smooth surface finish that can be easily clean

Unprotected carbon steel rusts readily when uncovered to a mixture of air and moisture. The ensuing iron oxide floor layer is porous and fragile. In addition, as iron oxide occupies a larger quantity than the original steel, this layer expands and tends to flake and fall away, exposing the underlying steel to further attack. This passive film prevents further corrosion by blocking oxygen diffusion to the steel floor and thus prevents corrosion from spreading into the majority of the metallic. This film is self-repairing, even when scratched or temporarily disturbed by an upset situation in the setting that exceeds the inherent corrosion resistance of that grade.

Grades similar to 420 and 440 are regularly used for knife making. The minimal 10.5% chromium in stainless steels offers resistance to approximately seven-hundred °C (1,300 °F), while sixteen% chromium supplies resistance as much as approximately 1,200 °C (2,200 °F). Type 304, the most common grade of stainless-steel with 18% chromium, is immune to roughly 870 °C (1,600 °F).

Cold Rolled,Hot Rolled Stainless steel Plate and sheets

• The added advantage of using chrome steel is addition of chromium and different alloying elements that improve corrosion resistance.
• Stainless steel knives are usually made out of ferritic or martensitic stainless steels.
• The minimal 10.5% chromium in stainless steels offers resistance to approximately seven-hundred °C (1,300 °F), while 16% chromium offers resistance up to approximately 1,200 °C (2,200 °F).
• In order to make knives which have first rate edge retention, the martensitic and ferritic grades of stainless-steel need to have a high sufficient carbon levels to be able to reach excessive hardness.

We produce ASTM/ASME Grade 304, Grade 304L,304h, 316, 316L, 316H, 316TI, 321, 321H, 309S, 309H, 310S, 310H, 410S, 2205, 904L, 2507, 254, gh3030, 625, 253MA, S30815, 317L, Type 317, 316lN, 8020, 800, 800H, C276, S32304 and others special requirement stainless steel grade.

Martensitic stainless steels can also be welded by electrical-arc but, as the heat-affected zone and the fusion zone form martensite upon cooling, precautions should be taken to keep away from cracking of the weld. Post-weld heat therapy is sort of all the time required whereas preheating earlier than welding can be necessary in some circumstances.

The corrosion resistance of iron-chromium alloys may have been first recognized in 1821 by Pierre Berthier, who noted their resistance against attack by some acids and suggested their use in cutlery. Another popular high-performing alloy, grade 304 stainless steel is a durable materials when it comes to tensile power, sturdiness, corrosion, and oxidation resistance. The melting point of stainless-steel 304 is reached at temperatures ranging between 2,550 °F – 2,650 °F (1399 °C – 1454 °C). However, the nearer grade 304 stainless steel reaches its melting point, the more tensile strength it loses.

embossed chrome steel sheets

The invention of stainless-steel adopted a sequence of scientific developments, starting in 1798 when chromium was first shown to the French Academy by Louis Vauquelin. In the early 1800s, James Stodart, Michael Faraday, and Robert Mallet noticed the resistance of chromium-iron alloys (“chromium steels”) to oxidizing brokers. Robert Bunsen discovered chromium’s resistance to robust acids.

This alloy is supposed to be a great resistor to drinkable or faucet water with up to 200 milligrams per liters of chlorides at ambient temperatures. However, at sixty-degree centigrade, it can be resistant to water containing 100 and fifty milligrams per liters. UNS S17400stainless steel has higher mechanical power than SUS304 steel. Unlike carbon steel, stainless steels don’t undergo uniform corrosion when exposed to wet environments.

There are also precipitation-hardening stainless steels which have wonderful corrosion resistance and hardenability properties. These are usually used in purposes the place corrosion is a big concern. A generally used precipitation-hardening chrome steel for blades is 17-7 PH. To achieve the maximum benefit of those alloys for making knives, one must know tips on how to correctly precipitation harden the metal. Stainless steels have a protracted historical past of software in contact with water as a result of their wonderful corrosion resistance. Applications embrace a spread of circumstances together with plumbing, potable water and wastewater therapy, desalination, and brine therapy.