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AISI 444 Ferritic Stainless Steel Tube / Martensitic SS Tube


AISI 444 Ferritic and Martensitic Stainless Steel Tubes ASTM A268/268M Manufacturers & Suppliers

Metline is one of the largest and most renowned manufacturer and supplier of AISI 444 ferritic and martensitic stainless steel seamless tube for general corrosion-resisting and high temperature service. We manufacture and export AISI 444 ferritic and martensitic stainless steel tubes. For us quality always stands first, and we would provide 100% free replacement to our customer. At the same time, we also strive to ensure that our quality for 444 stainless steel tubes is the best in the industry. Our continuous focus on quality, price and service has helped us win many order from India, and overseas. We welcome you to contact us for best prices for 444 ferritic and martensitic stainless steel tubes from our factory.

  • Equivalent: WNR 1.4521, UNS 44400, AISI 444
  • Manufacturing Specification: ASTM/ASME  A/SA 268
  • Ferritic Seamless Stainless Steel Pipes Available in Size Range of Nominal Dia: 1/2 “to 24” NB for seamless pipe, Schedules: 10S, 20S, 30S, 40S, STD, 60S , XS, 120S, 140S, 160S, XXS

Manufacturing Specification

  • ASTM A268 / A268M: Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service

Why Choose Metline as Your Source for ASTM 268 Ferritic Stainless Steel Tubes?

  • Quality Products: At Metline, our quality promise comes with a 100% replacement guarantee. All our products pass testing requirements of international manufacturing specification. All our stainless steel piping products are manufactured by ISO 9001 certified factory, and shipped with MTC according to EN 10204 3.1.
  • Best Price Guaranteed for Ferritic and Martensitic Stainless Steel Tubes: When you source Metline Industries, you source everything directly from the manufacturer and stockholder! We have an average daily sale volume of around 15-20 tons of stainless steel pipes & tubes from a stock of over 600 tons. We believe in offering our customer’s high quantity discounts and work closely with them on all their project requirements. We always offer the most competitive prices for stainless steel tubes to both prospective and existing customers.
  • Fast Quotations and Delivery: We understand your need for purchasing materials with short lead times. We have extensive stocks of standard size stainless steel pipes and tubes, enabling us to deliver goods on an immediate basis to all our customers in India and overseas. We have wide inventory of stainless steel seamless 304 and 316L pipes for fast delivery.
  • Quality Raw Materials: We use high quality raw materials to produce stainless steel pipes and tubes. Our raw materials are quality tested before being used in production of final product. We can also offer stage wise inspection for stainless steel pipes and tubes.
  • Standard and Non Standard Sizes for Ferritic and Martensitic Stainless Steel Tubes: We can offer stainless steel tubes and pipes in both standard and non standard sizes with shortest delivery times.
  • Complete Documentation: We provide complete product related documents to our customers before delivery of the goods.


AISI 444 Ferrictic and Martensitic Stainless Steel Tubes Manufactures and Exporters in India

Metline is a distinguished distributor and exporter of AISI 444 ferritic  and martensitic stainless steel tubes in India, with over 200 customers throughout the world. Stainless Steel UNS S44400 pipes and tubes is low carbon, dual stabilised, molybdenum containing ferrectic stainless steel with good ductility. We are capable of offering AISI 444 ferritic and martensitic stainles steel to our customers with the best quality at lowest prices in the industry. We sincerely welcome new and old customers to co operate with us for all their AISI 444 ferritic and martensitic stainless steel tubes requirements.

AISI 444 Ferritic and Martensitic Stainless Steel Tubes Production, Stock & Supply Range

ProductAISI 444 Ferritic and Martensitic Stainless Steel Tubes
Size1/2″ NB- 24″ NB
Wall ThicknessSchedule 5S- Scheduled XXS
Lengthup to 24m
StandardsASTM A268
ApplicatiobnHot-water tanks, Heat exchanger tubing, Automotive components, Brewery.
CertificationEN 10204 3.1
TestingHydro Tested, Chemical, Mechanical Test, PMI
InspectionThird Party Inspection, Buyer Inspection
PackingWeaving Bag, Seaworthy Bundles, Wooden Case if required
Delivery ConditionAnnealed and Pickled, Bright and Annealed
Delivery Time1-2 Days for Material in Stock, 7-30 Days for Make to Order Materials
Packaging DetailsKnitted Plastic Bag Bundle/ Wooden Case or According to Customer Request
FinishesHot rolled annealed and descaled

About AISI 444 Stainless Steel Tubes

AISI 444 is a low carbon, dual stabilised, molybdenum containing ferritic stainless steel with good ductility, toughness and resistance to sensitisation, even in the welds. With 18% chromium and 2% molybdenum, the steel has good pitting resistance and crevice corrosion resistance, similar to CS316 and good general corrosion resistance and oxidation resistance, similar to 316 in most environments. Being a ferritic stainless steel, AISI 444 is not susceptible to Stress Corrosion Cracking. Annealed AISI 444 is ductile and can be formed using a wide range of roll forming or mild stretch bending operations as well as the more common drawing and bending operations. AISI 444 does not harden excessively during cold working.

The steel has limited weldability and should not be used in the as-welded condition for dynamic or impact loaded structures. As with most ferritic stainless steels, AISI 444 can undergo grain growth in the heat affected zone of weldments, which may adversely affect the mechanical properties in these zones.

Chemical Composition of AISI 444 Ferritic and Martensitic Stainless Steel Tubes

4440.025 max1.00 max1.00 max0.040 max0.030 max71.5-19.501.75-2.50110.20+4(C+N) 0.80

Mechanical Properties of AISI 444 Ferritic and Martensitic Stainless Steel Tubes

TypeProduct Form0.2% Proof Stress (Mpa)Tenstile Strength (Mpa)Elongation (%)Brinell Hardness
444C275 min415 min20 min217

Physical Properties of AISI 444 Ferritic and Martensitic Stainless Steel Tubes

Density0.28 lbs/in3 7.75 g/cm3
Electrical Resistivity microhm-in (microhm-cm):68 ° F (20 ° C): 22.50 (57)
Specific Heat: BTU/lbl° F (kJ/kg•K)32 – 212 ° F (0 – 100 ° C): 0.102 (0.427)
Thermal ConductivityBTU/hr/ft2/ft/° F (W/m•K)At 212 °F (100 °C): 15.5 (26.8)
Mean Coefficient of Thermal Expansion32 – 212 ° F (0 – 100 °C): 6.1 x 10-s (11.0)
Modulus of Elasticity: ksi (MPa)29 x 103 (200 x 103) in tension



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