- 1.4057, DIN X17CrNi16-2, AISI 431 round bar
- 1.4057, DIN X17CrNi16-2, AISI 431 forging
- 1.4057, DIN X17CrNi16-2, AISI 431 sheet
- 1.4057, DIN X17CrNi16-2, AISI 431 flat bar
- 1.4057, DIN X17CrNi16-2, AISI 431 pipe
1.4057, DIN X17CrNi16-2, AISI 431
We can produce 1.4057, DIN X17CrNi16-2, AISI 431 stainless steel round rods, 1.4057, DIN X17CrNi16-2, AISI 431 forging,sheet,coil,and profiledstrip,Deformed steel,flat steel,mould,steel wire,have all specifications. With DuoNian production experience, strict control 1.4057, DIN X17CrNi16-2, AISI 431 chemical composition and 1.4057, DIN X17CrNi16-2, AISI 431 mechanical properties.From casting, forging, steel to hot and cold rolling process, heat treatment, etc, we have the control of professional engineers. We have advanced precision machining equipment, according to the requirements of users machining. in order to achieve the most satisfied with the user requirements.
Production specification
Round bar steel: 1mm to 3500mm
Square-shape steel: 1mm to 4000mm
Plate steel:0.1mm to 4000mm
Width: 10mm to 2500mm
Lenth: We can supply any lenth based on the customer's requirement.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Tubings: OD: φ6-1800mm, with wall thickness ranging from 1-35 mm.
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price.
We serve you with our honesty, integrity, and professionality.
Square-shape steel: 1mm to 4000mm
Plate steel:0.1mm to 4000mm
Width: 10mm to 2500mm
Lenth: We can supply any lenth based on the customer's requirement.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Tubings: OD: φ6-1800mm, with wall thickness ranging from 1-35 mm.
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price.
We serve you with our honesty, integrity, and professionality.
1.4057, DIN X17CrNi16-2, AISI 431
Designation by Standards
| Brand Name | LH No. | Mat. No. | DIN | EN | AISI |
| PK2SP | 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 | - | - | - |
Description
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.
Applications
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
Soft Annealing
Heat to 660-750oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 295.
Hardening
Harden from a temperature of 980-1030oC followed by oil or air quenching. Hardness after quenching is about 47 HRC.
Tempering
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
Forging
Hot forming temperature: 1100-800oC, slow cooling.
Machinability
In the fully annealed condition, 431 will gall and build up on the tools. Good surface finishes are not easily obtained.
Corrosion Resistance
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.
Welding
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.
Cold working
This alloy is easily drawn, spun, headed, sheared and bent compared with other stainless steels.
Mechanical properties
1.4057, DIN X17CrNi16-2, AISI 431 Mechanical properties,Our production completely according to the 1.4057, DIN X17CrNi16-2, AISI 431 standards to meet the 1.4057, DIN X17CrNi16-2, AISI 431 mechanical performance, can also according to the customer request, to meet the requirements of customers of 1.4057, DIN X17CrNi16-2, AISI 431 mechanical properties.
Heat treatment
1.4057, DIN X17CrNi16-2, AISI 431 Heat treatment,Our production completely according to the 1.4057, DIN X17CrNi16-2, AISI 431 standards to meet the 1.4057, DIN X17CrNi16-2, AISI 431 Heat treatment, can also according to the customer request, to meet the requirements of customers of 1.4057, DIN X17CrNi16-2, AISI 431 Heat treatment.
Machining
1.4057, DIN X17CrNi16-2, AISI 431 Machining,Our production completely according to the 1.4057, DIN X17CrNi16-2, AISI 431 standards to meet the 1.4057, DIN X17CrNi16-2, AISI 431 Machining, can also according to the customer request, to meet the requirements of customers of 1.4057, DIN X17CrNi16-2, AISI 431 Machining.
Welding performance
1.4057, DIN X17CrNi16-2, AISI 431 Welding performance,Our production completely according to the 1.4057, DIN X17CrNi16-2, AISI 431 standards to meet the 1.4057, DIN X17CrNi16-2, AISI 431 Welding performance, can also according to the customer request, to meet the requirements of customers of 1.4057, DIN X17CrNi16-2, AISI 431 Welding performance.
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