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Black/ Bright drawn 6 Moly 254 SMO hex bar and SMO 254 Round Bar manufacturer in India

DETAILED INFORMATION

The alloy 254SMO is also known by the names 6Mo Stainless Steel alloy ( 6Mo ) or 6 Molybdenum Stainless Steel alloy. There are a number of different names for 254 SMO. It consists of a high-molybdenum alloy designed specifically for use in aggressive chloride environments, as well as in saline water. It is an entirely unique high alloy austenitic stainless steel that was developed specifically for this purpose.

Alloy SMO 254 is a Super Austenitic Stainless Steel Alloy with a low Carbon content alloyed with Molybdenum and Nitrogen.

In its chemical composition, 254 SMO is composed of Nickel and Copper, which in combination, provides it with high impact toughness resistance. It will not crack under chloride stress corrosion cracking, along with pitting and crevice corrosion. Moreover, the alloys of this series are also stronger than those of the 300 series stainless steel alloys, particularly in environments containing halide ions, such as environments where chloride ions, bromide ions, and fluoride ions, are present. In cases such as pitting corrosion, crevice corrosion or stress corrosion cracking, conventional stainless steels may be easily attacked by local corrosion caused by ions, bromide ions, or fluoride solutions. Generally, halides cause general corrosion to accelerate in acidic environments.

6 Molybdenum SMO exhibits excellent impact strength at both room and cryogenic temperatures because of its austenitic microstructure.

It is highly ductile and impact-resistant as well (ck3mcun). Considering its high concentration of chromium, molybdenum, and nitrogen in its chemical composition, UNS S31254 SMO Stainless Steel is ideal for environments containing high chloride levels like seawater, pulp mills, beach plants, brackish water, etc. Stainless Steel UNS S31254 fulfills all European standards even at -196C. Higher nickel and molybdenum contents increase resistance to Stress Corrosion Cracking in austenitic steels.

Stainless Steel 254 SMO performs better in pure sulphuric acid environments than Stainless Steel 316, and in naturally aerated sulphuric acid environments with chloride ions, 254 SMO performs better than Stainless Steel 904L.

The Strauss test passes even after sensitizing for one hour at 600–1000 C, as it contains very low carbon content. 254 SMO has a very low chance of carbide precipitation during heating. This type of precipitation does not present any type of risk of intergranular corrosion as intermetallic phases are precipitated at given temperatures. 254 SMO should not be exposed for extended periods at these temperatures. The method can be used during welding and there is no risk of intergranular corrosion.

As part of the 254 SMO products, tubes are heat treated. If a further heat treatment process is required, solution annealing at 1150-1200°C (2100-2190°F) is recommended, followed by quenching in water. Thin-walled tubes should be quenched in air or water at a minimum temperature of 1130°C (2060°F).

This welding grade exhibits excellent welding properties. If it is performed correctly, no subsequent heat treatment is required. Fusion welding involves manual metal arc welding using covered electrodes, as well as gad shield arc welding with TIG and MIG electrodes.

Since 254 SMO alloys are designed to withstand severe corrosive environments, welding has to be done using thorough cleaning techniques to ensure optimal corrosion resistance.

During multipass welding, the interpass temperatures shouldn't exceed 100, and the welding heat input shouldn't exceed 1.5KJ per mm.

In India, Mehta Metals is the leading manufacturer of stainless steel 254 UNS S31254. This stainless steel grade is an austenitic stainless steel of the highest quality. It has a strength twice that of stainless steel 300 series stainless steels. There is no crevice corrosion or pitting with the alloy 254 SMO UNS S31254. It is also very workable due to its resistance to corrosion and pitting from chloride stress. In India, mehtametals.com is a major proponent of SMO 254 products due to the high demand for this product. Besides SMO 254 Sheet and Plate, SMO 254 Round Bars, SMO 254 Pipe Fittings, SMO 254 Forged Fittings, SMO 254 Flanges, SMO 254 Fasteners, SMO 254 Valves, and SMO 254 Gaskets, we also manufacture Cobalt Manufacturer and similar products.

CITIES WE DELIVER

Adoni, Amaravati, Anantapur, Chandragiri, Chittoor, Dowlaiswaram ,Eluru, Guntur, Kadapa, Kakinada, Kurnool, Machilipatnam, Nagarjunakoṇḍa, Rajahmundry, Srikakulam, Tirupati, Vijayawada, Visakhapatnam, Vizianagaram, Yemmiganur, Itanagar, Dhuburi, Dibrugarh, Dispur, Guwahati, Jorhat, Nagaon, Sivasagar, Silchar, Tezpur, Tinsukia, Ara, Barauni, Begusarai, Bettiah, Bhagalpur, Bihar, Sharif, Bodh Gaya, Buxar, Chapra, Darbhanga, Dehri, Dinapur Nizamat, Gaya, Hajipur, Jamalpur, Katihar, Madhubani, Motihari, Munger, Muzaffarpur, Patna, Purnia, Pusa, Saharsa, Samastipur, Sasaram, Sitamarhi, Siwan, Chandigarh, Ambikapur, Bhilai, Bilaspur, Dhamtari, Durg, Jagdalpur, Raipur, Rajnandgaon, Daman, Diu, Silvassa, Delhi, New Delhi, Madgaon, Panaji, Ahmadabad, Amreli, Bharuch, Bhavnagar, Bhuj, Dwarka, Gandhinagar, Godhra, Jamnagar, Junagadh, Kandla, Khambhat, Kheda, Mahesana, Morbi, Nadiad, Navsari, Okha, Palanpur, Patan, Porbandar, Rajkot, Surat, Surendranagar, Valsad, Veraval, Ambala, Bhiwani, Chandigarh, Faridabad, Firozpur Jhirka, Gurugram, Hansi, Hisar, Jind, Kaithal, Karnal, Kurukshetra, Panipat, Pehowa, Rewari, Rohtak, Sirsa, Sonipat, Bilaspur, Chamba, Dalhousie, Dharmshala, Hamirpur, Kangra, Kullu, Mandi, Nahan, Shimla, Una, Anantnag, Baramula, Doda, Gulmarg, Jammu, Kathua, Punch, Rajouri, Srinagar, Udhampur, Bokaro, Chaibasa, Deoghar, Dhanbad, Dumka, Giridih, Hazaribag, Jamshedpur, Jharia, Rajmahal, Ranchi, Saraikela, Badami, Ballari, Bengaluru, Belagavi, Bhadravati, Bidar, Chikkamagaluru, Chitradurga, Davangere, Halebid, Hassan, Hubballi-Dharwad, Kalaburagi, Kolar, Madikeri, Mandya, Mangaluru, Mysuru, Raichur, Shivamogga, Shravanabelagola, Shrirangapattana, Tumakuru, Vijayapura, Alappuzha, Vatakara, Idukki, Kannur, Kochi, Kollam, Kottayam, Kozhikode, Mattancheri, Palakkad, Thalassery, Thiruvananthapuram, Thrissur, Kargil, Leh, Balaghat, Barwani, Betul, Bharhut, Bhind, Bhojpur, Bhopal, Burhanpur, Chhatarpur, Chhindwara, Damoh, Datia, Dewas, Dhar, Dr. Ambedkar Nagar (Mhow), Guna, Gwalior, Hoshangabad, Indore, Itarsi, Jabalpur, Jhabua, Khajuraho, Khandwa, Khargone, Maheshwar, Mandla, Mandsaur, Morena, Murwara, Narsimhapur, Narsinghgarh, Narwar, Neemuch, Nowgong, Orchha, Panna, Raisen, Rajgarh, Ratlam, Rewa, Sagar, Sarangpur, Satna, Sehore, Seoni, Shahdol, Shajapur, Sheopur, Shivpuri, Ujjain, Vidisha, Ahmadnagar, Akola, Amravati, Aurangabad, Bhandara, Bhusawal, Bid, Buldhana, Chandrapur, Daulatabad, Dhule, Jalgaon, Kalyan, Karli, Kolhapur, Mahabaleshwar, Malegaon, Matheran, Mumbai, Nagpur, Nanded, Nashik, Osmanabad, Pandharpur, Parbhani, Pune, Ratnagiri, Sangli, Satara, Sevagram, Solapur, Thane, Ulhasnagar,n Vasai-Virar, Wardha, Yavatmal, Imphal, Cherrapunji, Shillong, Aizawl, Lunglei, Kohima, Mon, Phek, Wokha, Zunheboto, Balangir, Baleshwar, Baripada, Bhubaneshwar, Brahmapur, Cuttack, Dhenkanal, Kendujhar, Konark, Koraput, Paradip, Phulabani, Puri, Sambalpur, Udayagiri, Karaikal, Mahe, Puducherry, Yanam,  Amritsar, Batala, Chandigarh, Faridkot, Firozpur, Gurdaspur, Hoshiarpur, Jalandhar, Kapurthala, Ludhiana, Nabha, Patiala, Rupnagar,  Sangrur, Abu, Ajmer, Alwar, Amer, Barmer, Beawar, Bharatpur, Bhilwara, Bikaner, Bundi, Chittaurgarh, Churu, Dhaulpur, Dungarpur, Ganganagar, Hanumangarh, Jaipur, Jaisalmer, Jalor, Jhalawar, Jhunjhunu, Jodhpur, Kishangarh, Kota, Merta, Nagaur, Nathdwara, Pali, Phalodi, Pushkar, Sawai Madhopur, Shahpura, Sikar, Sirohi, Tonk, Udaipur, Gangtok, Gyalshing, Lachung, Mangan, Arcot, Chengalpattu, Chennai, Chidambaram, Coimbatore, Cuddalore, Dharmapuri, Dindigul, Erode, Kanchipuram, Kanniyakumari, Kodaikanal, Kumbakonam, Madurai, Mamallapuram, Nagappattinam, Nagercoil, Palayamkottai, Pudukkottai, Rajapalayam, Ramanathapuram, Salem, Thanjavur, Tiruchchirappalli, Tirunelveli, Tiruppur, Thoothukudi, Udhagamandalam, Vellore, Hyderabad, Karimnagar, Khammam, Mahbubnagar, Nizamabad, Sangareddi, Warangal, Agartala, Agra, Aligarh, Amroha, Ayodhya, Azamgarh, Bahraich, Ballia, Banda, Bara Banki, Bareilly, Basti, Bijnor, Bithur, Budaun, Bulandshahr, Deoria, Etah, Etawah, Faizabad, Farrukhabad-cum-Fatehgarh, Fatehpur, Fatehpur Sikri, Ghaziabad, Ghazipur, Gonda, Gorakhpur, Hamirpur, Hardoi, Hathras, Jalaun, Jaunpur, Jhansi, Kannauj, Kanpur, Lakhimpur, Lalitpur, Lucknow, Mainpuri, Mathura, Meerut, Mirzapur-Vindhyachal, Moradabad, Muzaffarnagar, Partapgarh, Pilibhit, Prayagraj, Rae Bareli, Rampur, Saharanpur, Sambhal, Shahjahanpur, Sitapur, Sultanpur, Tehri, Varanasi, Almora, Dehra Dun, Haridwar, Mussoorie, Nainital, Pithoragarh, Alipore, Alipur Duar, Asansol, Baharampur, Bally, Balurghat, Bankura, Baranagar, Barasat, Barrackpore, Basirhat, Bhatpara, Bishnupur, Budge Budge, Burdwan, Chandernagore, Darjeeling, Diamond Harbour, Dum Dum, Durgapur, Halisahar, Haora, Hugli, Ingraj Bazar, Jalpaiguri, Kalimpong, Kamarhati, Kanchrapara, Kharagpur, Cooch Behar, Kolkata, Krishnanagar, Malda, Midnapore, Murshidabad, Nabadwip, Palashi, Panihati, Purulia, Raiganj, Santipur, Shantiniketan, Shrirampur, Siliguri, Siuri, Tamluk, Titagarh

SMO 254 Specification

Range : 3mm to 100mm
Standards : ASTM A240, UNS S31254 F44/ 1.4547 / 2378
Type : Sheet, Plates, Flat, Strips, Profile, Blank ,Circle, Ring etc.
Finish : Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated)
Form : Coils, Foils, Rolls, Plain Sheet, Strip, Flats, Blank (Circle), Ring (Flange) etc.
Steel Grades : 201, 202, 304, 316L, 310S etc

SMO 254 Chemical Composition

Element

Content (%)

Iron, Fe

55.69

Chromium, Cr

20

Nickel, Ni

18

Molybdenum, Mo

6.1

Nitrogen, N

0.20

Carbon, C

0.010

SMO 254 Mechanical Composition

Properties

Metric

Imperial

Tensile strength

680 MPa

98600 psi

Yield strength

300 MPa

43500 psi

Modulus of elasticity

195 GPa

28300 ksi

Shear modulus

75 GPa

10900 ksi

Poisson’s ratio

0.30

0.30

Elongation at break

50 %

50 %

Hardness, Brinell

210

210

Alloy 254 SMO - Physical Properties of Alloy 254

Density (Kg.m-3) 8000
Magnetic Permeability <1.05
Young’s Modulus (N/mm2) 200 x 103
Specific Heat 20°C (J.Kg-1.°K-1) 500
Electrical resistance, 20°C (µ.O.m) 0.85
Thermal conductivity, 20°C (W.m-1.°K-1) 13.5

SMO 254 SHEETS, SMO 254 PLATES AND STRUCTURALS EQUIVALENT GRADES

STandARD

WERKSTOFF NR.

UNS

AFNOR

EN

SMO 254

1.4547

S31254

Z1 CNDU 20.18.06Az

X1CrNiMoCuN20-18-7

Stock & Production Range of Stainless Steel 254 SMO Materials

Product

Stainless Steel 254 SMO

ASTM Standard

ASTM A182 (F44), ASTM A240, ASTM A249, ASTM A269, ASTM A276, ASTM A312, ASTM A469, ASTM A479, ASTM A484, ASTM A813, ASTM A814

Equivalents

UNS S31254, 1.4547, X1CrNiMoCuN20-18-7, 1.4529

Items

Pipe, Tubes, Tubing, Fittings, Flanges, Valves, Fasteners, Sheets, Plates, Bars, Forged Parts, Cast Parts

Size

Diameter: 1” to 11”, Length: upto 24″

Pipe Type

Seamless, Welded, ERW, Fabricated, Custom Size Pipes

Specifications

ASTM, ASME, DIN, GOST, JIS

Certification

EN 10204 3.1

Fittings Type

Butt Weld, Screwed & Socket Weld, Flanges, Instrumentation

Other Fittings

Elbows, Tees, Reducers, Caps, Stub Ends, Flanges (ANSI, Table E, D and H), Nuts, Bolts, Screws, Threaded Bars

Properties and Processing Characteristics of Stainless Steel 254 SMO

  • Predictable resistance to pitting and crevice corrosion: PRE = 42.5%. (Predictable resistance is calculated by dividing the predicate, in weight-percentage, by Cr and the quantities Mo and N.)
  • A high resistance to corrosion in general
  • Stress corrosion crack resistance is high
  • Stainless steels with higher strength than conventional austenitic steels
  • An excellent weldable metal

Fabrication Data & Other Properties of Stainless Steel 254 SMO

Copper/copper alloys and other similar metals should be avoided when abrasion is required. Those metals may crack during subsequent welding, hot processing, or heat treatment if present in metallic form.

Machinability

In spite of its high work hardening rate and low sulfur content, stainless steel grade 254 SMOTM is very difficult to machine; however, sharp tools, overpowered machine tools, positive feeds, plenty of lubrication, and slow speeds tend to produce good machining results when used properly.

Bending

A cold bend at a very tight radius can be performed with 254 SMO, as it has excellent formability. Annealing is rarely required after the cold bend.

Welding

There is a need for filler metals such as AWS A5.14 ERNiCrMo-3, and alloy 625, when welding stainless steel grade 254 SMOTM. Electrodes should be those that are compatible with AWS A5.11 ENiCrMo-12.

Annealing

It is recommended that this material be annealed at 1149-1204°C (2100-2200°F), then quenched in water.

Hot Working

You can forge, upset, and handle this material at 982-1149°C (1800-2100°F) and other temperatures below. As this range will result in scaling and reduced workability, it is recommended that temperatures not exceed this range. An annealing process is recommended to regain maximum corrosion resistance properties.

Cold Working

In spite of the process being hard due to its high work hardening rate, cold working can be undertaken using all the traditional methods. The result will provide the material with increased strength and toughness.

Hardening

Heat treatment does not harden stainless steel grade 254 SMOTM. Only cold reduction can achieve hardening.

Forging

As this is a highly alloyed material, forging temperatures are preferably 2370/1920oF (1300/1050oC), followed by solution annealing at a minimum of 2100oF (1150oC).

Corrosion Resistant Properties of Stainless Steel 254 SMO

  • High chromium, molybdenum, and nitrogen content results in excellent resistance to pitting and crevice corrosion
  • During heating, there is practically no risk of carbide precipitation because of its very low carbon content
  • The material is extremely resistant to chlorides, thus making it suited for use in seawater. It can be exposed to it for prolonged periods without developing crevice corrosion.

Testing & Inspection of Stainless Steel 254 SMO Materials

Testing (Destructive, Non Destructive)

Positive Material Identification – PMI Testing Hydrostatic Test
Chemical Analysis – Spectro Analysis Hydrogen-Induced Cracking (HIC) Test
Mechanical Testing Such as Tensile, Elongation, Reduction of Area Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
Micro Test Radiography Test
Macro Test Dye Penetrant Test (DP Test)
Hardness Test Ultra Sonic Test (UT)
Pitting Resistance Test Eddy Current Testing
Intergranular Corrosion (IGC) Test Impact Test
Flaring Test Bend Test
Flattening Test

Alloy 630 Round Bars Heat Treatment

Designation Processing
Condition A

Heat treated at 1900°F*25°F for 1/2 hour, air cooled or oil quenched to below 90°F. Usually performed at a mill.

In most applications, 17-4 stainless steel should not be used in Condition A, even though it may provide the necessary tensile strength. The structure is an untempered martensite that has low fracture toughness and ductility, while having poor resistance to stress-corrosion cracking. Superior service performance is assured by using 17-4 stainless steel in the heat-treated condition.

For optimum machining results; if no ageing condition is specified, H1150 should be used.

H900 A material heated at 900°F*15°F for 1 hour and cooled by air. High hardness but low toughness. Sensitive to stress corrosion cracking. Heating for 4 hours improves toughness with about a 4 ksi reduction in tensile and yield.

H925, H1025, H1075,

H1100, H1150

A material heated 4 hours at a specific temperature, then cooled by air.
HH1150 The material was heated for 4 hours at 1150F, cooled by air, and then heated for another 4 hours at 1150F and cooled by air.
H1150-M Material heated at 1400°F*25°F for 2 hours, cooled by air, then heated at 1150°F*15°F for 4 hours and cooled by air.

 

Inspection

  • All goods are subject to internal inspection before shipment by our company.
  • The buyer or their representative is welcome to visit our facility for a personal inspection
  • In addition to renowned inspection agencies such as TUV, BVIS, SGS, Lloyds, and DNV, we have regular inspections at our facilities.

Prices for Stainless Steel 254 SMO Materials

A stainless steel 254 SMO's price is directly affected by the price of its raw materials, such as iron ore, scrap metal, chromium, nickel, and other alloying substances. Due to the high amount of nickel and chrome in heat resistant stainless steel and nickel alloy plates, their production cost is high. While mild steel is one of the least expensive steel materials, carbon steel, 400 series stainless steels, aluminum, alloy steel, and 300 series stainless steels follow. As titanium, Inconel, Monel and Hastelloy contain a high nickel, chromium and moly content, they are very expensive.

Documents Provided at the time of Domestic Sales or Export of Stainless Steel 254 SMO Products

Certificate of Origin

Raw Material Test Reports

Commercial Invoice

Heat Treatment Charts

Packing List

Quality Assurance Plan (QAP)

Fumigation Certificates

NABL approved Laboratory Test Reports

Letter of Guarantee

Material Test Certificates

ROHS Certificate

Certificate of Compliance/Conformity

Price Basis for Stainless Steel 254 SMO Materials

We can offer any of the following price basis depending on your requirement:

  • Ex-works
  • FOR Site in India
  • FOB Nhava Sheva
  • CFR, CIF, CPT your destination port
  • Door to Door Delivery Duty Paid as well as Duty Unpaid

Delivery Time of Stainless Steel 254 SMO Materials

  • If the items are available in stock, we take 2 days from the date of receipt of advance payment to clear the shipment and send it to port.
  • And in-case the items are not available in stock, the time taken for manufacturing depends on the size, quantity and grade.
  • However we can claim the fact that we can compete with anyone in India on Delivery time and most of the time our production time is the least.
  • We have tied up with strong logistic partners in India which can undertake any type of shipping activities and make sure that there is no delay in shipment.

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