150 mm and 170 mm Round Bars of Grade 1.2787 ESR Equvelant To AISI 431 Hardened And Tempered To 950-1050 C Degree Freq

Type 431 Stainless Steel

Hardenable Martensitic Stainless Steel Alloy

Type 431 is a hardenable martensitic stainless steel alloy which has a combination of high tensile and torsional strength - this makes it well suited to shaft manufacture.

The alloy is intended for use in applications requiring good strength and toughness combined with reasonable corrosion resistance. As the alloy offers considerable resistance to saltwater corrosion, it is used widely in marine equipment and systems. Type 431 is easily machined in the annealed state but welding is difficult due to cracking and it is recommended that the material is preheated to improve welding performance.

Key Features:

Type 431 stainless steel is a heat treatable martensitic stainless - the alloy offers high tension and torsional strength and is well suited in the manufacture of shafts. However, welding is poor and the material cannot be easily cold worked.

Technical Assistance

Our knowledgeable staff and resident metallurgists will be pleased to assist you further on any technical topic. Smiths Metal Centres Limited also boasts an in-house UKAS Accredited Testing Laboratory which is unique within the multi-metal and plastic stockholding sector. We believe this underlines our total commitment to quality and our ethos of being the complete service provider.

Typical Applications:

• Marine systems
• Pump & propeller shafts
• Outboard motor drive shafts
• Valve stems
• Aircraft components
• Axles

We offer Type 431 Stainless Steel in round bar, plate, sheet and tube. We provide dedicated processing services throughout the Smiths Group - with more than 30 band saws and a fully automated magazine feed CNC rod blanking line, we can process your material to your exact requirements.

431 STAINLESS UNS S43100

431 stainless was formulated to provide better corrosion resistance and toughness in a quench- hardenable, stainless steel. It maintains good strength and corrosion resistance and hardness, in temperatures from -100 to 1200 degress f (-73/ 650c). It has the best corrosion resistance of the conventional martensitic stainless grades.

Applications: 431 stainless is widely used in highly stressed aircraft components, valves, also pump and pump shafts.

Corrosion Resistance

The following table is for reference only, many factors can affect the corrosive resistance, a corrosion test for each application should be applied.

Heat Treatment

Annealing: typical Heat uniformly 1200/1250f (650/677c) remove from furnace and cool in air. Brinell hardness expected approximately 270. This is the best condition for overall machining.

Hardening: Heat 1800/1950f (982/1066c) soak at heat, quench in oil. You may also harden in air.

Tempering: In the range of 700/1050f (371/565c), to achieve desired mechanical properties. Soak at hest for at least one hour, longer for larger pieces and cool in air.

Typical Room Temperature Tensile Properties

Machinability:

431 in the annealed condition can gall and build up on the cutting tool which can result in poor finishes.

Specifications:

AMS 5628 ASTM A276 ASTM A314 ASTM A479 QQS 763 PWA LCS EN10204 DIN3.1B

Shapes Manufactured

Flat Bars, Square Bars, Round Bars, Rings, Hollows, Discs, Blocks and special Shapes. Send us a drawing to see how we can save you material and Machining time!

The information in this data sheet is for information only and should not be used for engineering.

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.