440A 440B 440C Stainless Steel Flat Bar Stock High Hardness

High Hardness 440A 440B 440C Stainless Steel Flat / Martensitic Stainless Steel Grade 440C

About 440 Stainless Steel

Type 440 Stainless Steel, as known as “razor blade steel,” is a hardenable high-carbon chromium steel. When put under heat treatment it attains the highest hardness levels of any grade of stainless steel. Type 440 Stainless Steel, which comes in four different grades, 440A, 440B, 440C, 440F, offers good corrosion resistance along with abrasion resistance. All grades can be easily machined in their annealed state, they also offer resistance to mild acids, alkalis, foods, fresh water, and air. Type 440 can be hardened to Rockwell 58 harness.

Type 440 Stainless Steel Applications

Thanks to each grades outstanding properties, all grades of Type 440 Stainless Steel can be found in a number of different products including:

• Pivot pins
• Dental and surgical instruments
• High quality knife blades
• Valve seats
• Nozzles
• Oil pumps
• Rolling element bearings

Type 440 Stainless Steel Chemical Composition

Each grade of Type 440 Stainless Steel is made up of a unique chemical composition. It should be noted that the only major difference between the grades is the level of Carbon

Type 440A

• Cr 16-18%
• Mn 1%
• Si 1%
• Mo 0.75%
• P 0.04%
• S 0.03%
• C 0.6-0.75%

Type 440B

• C 0.75-0.95%

Type 440C and 440F

• C 0.95-1.20%

All of the Type 440 Stainless Steel offered by Continental Steel meets or exceeds some of the toughest standards including ASTM, QQ, and MIL-S.

Standard Size of our stainless steel flat bar

Jiangsu Mittel Steel Industrial Limited is  located in Wuxi City,  a beautiful city near Shanghai.  Wuxi is close to  Shanghai (BAO STEEL) ,Zhangjiagang (ZPSS),Ningbo (BAO XIN),KUN SHAN (DKSS), enjoy excellent geographic location and convenient water, land and air transportation. , Wuxi become the biggest  stainless steel sheet ,plate and coil  supply Centers in China. Jiangsu Mittel Steel Industrial Limited was established in 1998 years. as one of the largest stockists and manufacturers of industrial grade Stainless Steel products and derivatives in Wuxi ,We keep a stock of 50000 tons every month, so we can delivery goods in fast time.

Our company supplies cold/hot-rolled stainless steel sheets,stainless steel coils and stainless steel Plate to many steel factories from athome and abroad, including Shanxi Taigang Iron& Steel CO, . Ltd (TISCO)Zhangjiagang Pohang (ZPSS), Shanghai BAO STEEL, Ningbo Baoxin and steel factories in Taiwan area, Mainland Chinese and foreign countries and regions. 

Our long-term business lines are 201.202.304(1.4301).304L.316.316L(1.4404).430.409L, 309S ,310S(1.4845).317L.904L.S31803(1.4462).S32750.S32760, Finish: 2B, BA, NO. 1 NO. 4, HL, 8K and so on...Meanwhile, our company is also engaged in the long-term supply of homemade & imported medium and thick plates, galvanized and carbon steel products. 

Adhering to the principle of "quality first and customer foremost",our company will offer long-term service to nationwide manufacturers of household appliances, elevators, tableware, ornaments, tanks and machines. We can offer precise frosted wiredrawing, 8K mirror finishing and skim board oil-abrasion of various specifications at any time. The precisely-processed products will meet your requirements for high quality. Our company is a modern enterprise integrating distribution and storage. 

If you are interested in any of our products or would like to discuss a custom order, please feel free to contact us. We are looking forward to forming successful business relationships with new clients around the world in the near future.