Model NO.: AISI 431 Technique: Forged Surface Treatment: Polished Section Shape: Round Product Name: DIN X17crni16-2 AISI 431 Stainless Industrial Stee MOQ: 1 Ton Shipping: by Sea, Air Grade: DIN X17crni16-2 AISI 431 Application: Boiler Plate Transport Package: Standard Seaworthy Package or as The Customers′ Re Origin: China Type: Oil&Gas Material: Oil&Gas Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose Key Word: Stainless Steel
Tube Certificate: ISO9001:2008 Payment Term: L/C, T/T Delivery Term: Fob, CIF, CFR, Ex-Work, etc. Shape: Round Pipe Trademark: Dongbei Special Steel Specification: customized sizes Production Description:
1. Steel Grade: DIN X17crni16-2 AISI 431
2. Product name: DIN X17crni16-2 AISI 431 Stainless Industrial Steel Pipe
3. Length: 20m maximum
4. Outside diameter: 3mm - 219mm
5. Wall thickness: 0.5 - 35mm
Steel AISI 431 (Mat.No. 1.4057, DIN X17CrNi16-2, AISI 431)
Designation by Standards
|Brand Name ||Ravne No. ||Mat. No. ||DIN ||EN ||AISI |
|AISI 431 ||911 ||1.4057 ||X17CrNi16-2 ||X17CrNi16-2 ||431 |
Chemical Composition (in weight %)
|C ||Si ||Mn ||Cr ||Mo ||Ni ||V ||W ||Others |
|0.17 ||max. 1.0 ||max. 1.50 ||16.00 ||- ||2.00 ||- ||- ||- |
431 is a martensitic stainless combining excellent impact strength at high hardness levels with the best corrosion resistance of any martensitic stainless steels. Steel with high polishability. For application up to working temperature 500oC.
431 has been successfully used in a variety of aircraft and general industrial applications. These include fasteners, shafts, bolts, valve components and chemical equipment, components for dairies, machine building and paper industry.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 216
Density [g/cm3]: 7.70
Thermal conductivity [W/m.K]: 25.0
Electric resistivity [Ohm mm2/m]: 0.70
Specific heat capacity[J/g.K]: 0.46
Modulus of Elasticity [103 N/mm2]
|20oC ||200oC ||400oC |
|216 ||205 ||190 |
Coefficient of Linear Thermal Expansion 10-6 oC-1
|20-100oC ||20-200oC ||20-300oC ||20-400oC ||20-500oC ||20-600oC ||20-700oC |
|11.2 ||11.5 ||11.7 ||11.9 ||12.0 ||12.1 ||12.0 |
Continuous Cooling Transformation (CCT) Diagram
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Heat to 660-750oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 295.
Harden from a temperature of 980-1030oC followed by oil or air quenching. Hardness after quenching is about 47 HRC.
Tempering temperature: For Q+T 800: 750-800oC. For Q+T 900: 600-650oC.
0.2 % Proof Stress (N/mm2) at Elevated Temperatures
|Condition ||100oC ||150oC ||200oC ||250oC ||300oC ||350oC ||400oC |
|Q+T 800 ||515 ||495 ||475 ||460 ||440 ||405 ||355 |
|Q+T 900 ||565 ||525 ||505 ||490 ||470 ||430 ||375 |
Diagram Tempering Temperature - Mechanical Properties
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Hot forming temperature: 1100-800oC, slow cooling.
In the fully annealed condition, 431 will gall and build up on the tools. Good surface finishes are not easily obtained.
431 is superior to all other martensitic grades in terms of corrosion resistance. Will resist dilute acids and alkalis, neutral and basic salts, food acids, fresh water and atmosphere.
Most electric welding procedures have proven successful with 431 stainless. Filler metal should be AWS E/ER410.To avoid cracking, pre-heat the workpiece to 204-316oC. After air cooling, treat at 649oC to reattain maximum properties.
Embittlemnt: It must be in mind that the temperature range between 425 and 525oC must be avoided owing to embritllement at 475oC.
This alloy is easily drawn, spun, headed, sheared and bent compared with other stainless steels.
Bozhong Group Mainly supply in forms of coil, sheet, plate, rod, bar, tube, pipe, beam, angle, flange, wire, strip, channel, etc., with various varieties, wide range of dimensions, high purity, stable chemical composition, high dimensional accuracy and excellent surface quality. The products are mainly used in the fields of industries such as automobile engineering, railway transportation, aviation, aerospace, machinery, petrochemical, energy, environmental protection, offshore, chemical, oil & gas, ilitary, power plant, nuclear power, pressure vessel, boiler equipment, mold manufacture, etc.
l Steel Plate
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/rod Steel Round Bar
steel flat bar
steel square bar
l steel pipe/tube ( welded or seamless )
steel round pipes
steel square pipes
steel welded tubes
steel seamless tubes
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Bozhong Group can supply a variety of structural steel, high-strength steel, wear-resistant steel plate, boiler and pressure vessel steel, marine engineering and stainless steel plate in the thick steel and various European standard bars and pipes and profiles.Our global sales and service network throughout all around the world to ensure that the goods reach the customer in the shortest time.
We can follow your drawings and requirements, to provide you with oxygen cutting, plasma cutting and laser cutting and other processing services. You can also perform ultrasonic testing in accordance with EN10160 standard, EN10164 standard test Z15, Z25, Z35, weld bending detection, PWHT detection,etc.
We have ISO9001: 2000 quality management system certification, and obtain the quality certification from all the well-known certification company, including TuV / LRS / GL / CE and so on.
Special steel includes as below:
Boiler and pressure vessel steel
Nuclear power steel
High strength steel
Abrasion resistant steel
Weathering, corrosion resistant and fire resistant steel
High rise building steel
Shipbuilding and offshore engineering steel
Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.
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A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.
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A: We have ready stock for most of material grades in our warehouse. If the material don't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.
Q: What is the payment term?
A: T/T or L/C.
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A: Yes. We can provide sample to you for approval before you place an order to us. Free sample is available if we have stock.
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