Description
SS 431 Round Bars / Stainless Steel 431 Forged Bars
SS 431 Round Bars / DIN EN 1.4057 / X17CrNi16-2 stainless steel material is a nickel-containing martensitic stainless steel, which has better corrosion resistance and mechanical properties than straight chromium stainless steel. 1.4057 is a rust- and acid-resistant, martensitic chromium steel with nickel addition. The higher carbon content makes it tend to form chromium carbide, and therefore the formation of chromium-depleted areas make 1.4057 material susceptible to intergranular corrosion. However, the surface polishing can improve its corrosion resistance.
DIN 1.4057 is also known as AISI 431. SS431 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 500. The steel grade SS431 / 1.4057 ( also called ASTM 431 and SS2321) is a high tensile strength martensitic stainless steel with good machinability. The steel suits good for production of corrosion resistance details by machining, and where the steel needs to be resistive to strong oxidizing acids e.g. nitric acid.
SS431 stainless steel or 4057 or 1.4057 is a very common used martensitic stainless steel grade. This grade is written as 1.4057 or X17CrNi16-2 according to EN norm and it is written as UNS S43100 according to UNS norm.
SS 431 Round Bar is a high chromium-low nickel high hardenability Martensitic stainless steel with high strength and good corrosion resistance, as generally supplied hardened and tempered in the tensile range 850 – 1000 Mpa (condition T) Brinell range 248 – 302. Characterised by very good corrosion resistance in general atmospheric corrosive environments, good resistance to mild marine and industrial atmospheres, resistant to many organic materials, nitric acid and petroleum products coupled with high tensile and high yield strength plus excellent toughness in the hardened and tempered condition. 431 due to its excellent hardenability is capable of being through hardened up to Rc44, depending upon carbon content and section size.
SS 431 Chemical Composition of Grade X17CrNi16-2 (1.4057) :
Element | Min. | Max. |
C | 0.12 | 0.22 |
Si | – | 1.00 |
Mn | – | 1.50 |
Ni | 1.50 | 2.50 |
P | – | 0.040 |
S | – | 0.030 |
Cr | 15.00 | 17.00 |
SS431 / 1.4057 Standard Available in forms :
- • ASTM A182/ ASME SA182 Stainless Steel Pipe Fittings
- • ASTM A213 / ASME SA213 Seamless Stainless Steel Pipes
- • ASTM A240/ ASME SA240 Stainless Steels Sheets / Plates
- • ASTM A249/ ASME SA249 Stainless Steel Welded Tubes
- • ASTM A269/ ASME SA269 Stainless Steel Tubes
- • ASTM A270/ ASME SA270 Stainless Steel Sanitary Tubes
- • ASTM A312/ ASME SA312 Stainless Steel Pipes
- • ASTM A403/ ASME SA403 Stainless Steel Pipe Fittings
- • ASTM A554/ ASME SA554 Stainless Steel Welded Tubes
- • ASTM A731/ ASME SA731 Stainless Steel Pipes
- • ASTM A789/ ASME SA789 Stainless Steel Tubes
- • ASTM A790/ ASME SA790 Stainless Steel Pipes
- • ASTM A791/ ASME SA791 Stainless Steel Tubes
SS431 Products Available in forms:
- • SS 431, Type 431, WNR 1.4057, UNS S43100, AISI 431 Plates
- • SS 431, Type 431, WNR 1.4057, UNS S43100, AISI 431 Pipes
- • SS 431, Type 431, WNR 1.4057, UNS S43100, AISI 431 Round Bar
- • SS 431, Type 431, WNR 1.4057, UNS S43100, AISI 431 Tube
- • SS 431, Type 431, WNR 1.4057, UNS S43100, AISI 431 Flanges
- • SS 431, Type 431, WNR 1.4057, UNS S43100, AISI 431 Wire
- • SS 431, Type 431, WNR 1.4057, UNS S43100, AISI 431 Fittings
SS431 Equivalent grades of Steel X17CrNi16-2 (1.4057) :
EU | EN | X17CrNi16-2 |
USA | AISI | 431 |
USA | UNS | S43100 |
Germany | DIN,WNr | X17CrNi16-2 |
China | GB | 1Cr17Ni2 / ML1Cr17Ni2 |
Poland | PN | 2H17N2 |
Russia | GOST | 14KH17N2 / 20KH17N2 |
Japan | JIS | SUS431 |
- AFNOR : X17CrNi16-2 (former Z15CN16-2)
- AISI 431
- SUS 431
Applications of SS 431 Round Bars :
The main field of application of this stainless steel is the mechanical engineering, as a thrust washer or in the petroleum and petrochemical industry. Further applications from the 1.4057 in power plant construction, in the automotive industry and in the aviation. SS431 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.
- Construction parts of the highest strength in the food, soap and acetic acid industries
- Glass industry : manufacturing of pressing die moulds, blowing moulds and section rolls.
- Plastics processing industry and rubber working.
- Pump- and Valve parts
- Shafting
- Spindels
- Piston rods
- Fittings
- Stirrers
- Bolts
- Nuts
Qualities of SS 431 Round Bars :
- • Martensitic stainless steel, possessing corrosion resistance between the 13 % chromium and the 18/8 steels.
- • Highly resistant to organic acids and certain mineral acids, as well as to chloride-polluted media.
- • Good mechanical properties and resistance to hot oxidation.
- • Good machineability in all normal toolmaking processes (turning, ECM, EDM).
- • Able to take a high polish.
- • Magnetic.
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DIN X17CrNi16-2 equivalents |
ASTM A176 Grade 431 |
ASTM A276 Grade S43100 |
ASTM A314 Grade S43100 |
ASTM A473 Grade 431 |
ASTM A479 Grade S43100 |
ASTM A493 Grade S43100 |
ASTM A511 Grade MT431 |
ASTM A579 Grade 53 |
ASTM A580 Grade S43100 |
ASTM A959 Grade S43100 |
ASTM F2281 Grade S43100 |
ASTM F2281 Type I Class B |
ASTM F593 Grade S43100 |
ASTM F593 Grade Alloy Group 6 |
ASTM F594 Grade S43100 |
ASTM F594 Grade Alloy Group 6 |
ASTM F738M Grade S43100 |
ASTM F738M Grade Alloy Group C3 |
ASTM F836M Grade S43100 |
ASTM F836M Grade Alloy Group C3 |
DIN 1.4057 |
DIN X20CrNi17-2 |
AFNOR Z15CN16-02 |
BS 431S29 |
BS 321S31 |
BS 7S80 |
UNI X16CrNi16 |
SS 2321 |
AISI 431 |
SAE 431 |
JIS SUS431 |
EN X17CrNi16-2 |
EN 1.4057 |
ISO X17CrNi16-2 |
ISO C3 |
GOST 20Ch17N2 |
AMS 5628 |
UNS S43100 |
Cities We Can Supply our SS 431 Round Bars / Forged Bars / Flat Bars to :
Andhra Pradesh, Arunachal Pradesh, Assam, Bihar, Chhattisgarh, Goa, Gujarat, Haryana, Himachal Pradesh, Jammu and Kashmir, Jharkhand, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Manipur, Meghalaya, Mizoram, Nagaland, Odisha, Punjab, Rajasthan, Sikkim, Tamil Nadu, Telangana, Tripura, Uttar Pradesh, Uttarakhand, West Bengal, Hyderabad, Itanagar, Dispur, Patna, Raipur, Panaji, Gandhinagar, Chandigarh, Shimla, Srinagar, Jammu , Ranchi, Bengaluru, Thiruvananthapuram, Bhopal, Mumbai, Imphal, Shillong, Aizawl, Kohima, Bhubaneswar, Chandigarh, Jaipur, JajPur, Gangtok, Chennai, Agartala, Lucknow, Dehradun, Kolkata, Visakhapatnam, Vijayawada, Guntur, Nellore and Tirupati, Visakhapatnam, Vijayawada, Guntur, Nellore and Tirupati, Guwahati, Tezpur, Dibrugarh, Silchar and North Lakhimpur, Gaya, Biharsharif, Darbhanga and Bhagalpur, Bilaspur, Korba, Durg-Bhilainagar, Raigarh and Rajnandgaon, Vasco-da-Gama, Ponda, Margao, Mapusa and Goa Velha, Ahmedabad, Surat, Rajkot, Junagadh and Vadodara, Faridabad, Gurgaon, Sonipat, Panipat and Ambala, Dharamshala, Mandi, Solan, Bilaspur and Chamba, Anantnag, Leh, Udhampur, Ramnagar and Baramulla, Bokaro Steel City, Jamshedpur, Deoghar, Hazaribagh and Dhanbad, Mysore, Davangere, Mangalore, Hubli-Dharwad and Belgaum, Kochi, Kozhikode, Thrissur and Malappuram, Indore, Gwalior, Jabalpur, Ujjain and Sagar, Pune, Nagpur, Nashik, Aurangabad and Solapur, Bishnupur, Ukhrul, Tamenglong, Chandel and Senapati, Cherrapunji, Tura, Jowai, Baghmara and Nongpoh, Lunglei, Serchhip, Champhai, Tuipang and Mamit, Tuensang, Zunheboto, Mokokchung, Kiphire Sadar and Phek, Rourkela, Cuttack, Brahmapur, Puri and Sambalpur, Amritsar, Jalandhar, Ludhiana, Patiala and Kapurthala, Bikaner, Jaisalmer, Jodhpur, Udaipur and Ajmer, Bikaner, Jaisalmer, Jodhpur, Udaipur and Ajmer, Tiruchirappalli, Madurai, Erode, Vellore and Coimbatore, Warangal, Nizamabad, Karimnagar, Adilabad and Khammam, Warangal, Nizamabad, Karimnagar, Adilabad and Khammam, Noida, Varanasi, Allahabad, Agra and Kanpur, Haridwar, Roorkee, Rishikesh, Kashipur and Haldwani, Darjeeling, Siliguri, Asansol, Howrah and Durgapur, Andaman and Nicobar Islands, Chandigarh, Dadra and Nagar Haveli, Daman and Diu, Lakshadweep, NCT of Delhi, Puducherry, Port Blair, Chandigarh, Silvassa, Daman, Kavaratti, New Delhi.