Stainless Steel 442 seamless pipes and tubes are made from UNS S44200, a high chromium ferritic stainless steel developed for elevated temperature service. With 18% to 23% chromium, the grade offers good resistance to oxidation and scaling when exposed to heat. Its chromium content places it between our SS 430 tubes and TP446 pipes and tubes. Amardeep Steel supplies Stainless Steel 442 seamless pipes and tubes for applications where heat resistance is an important requirement. For other stainless steel grades, you can browse our SS seamless pipes and tubes range. Every order includes mill test certificates to EN 10204 3.1 and full heat traceability.
What Are Stainless Steel 442 Seamless Pipes and Tubes?
Grade 442 is a straight chromium ferritic stainless steel. Its 18% to 23% chromium gives better resistance to scaling in hot air and furnace gases than 430, while staying magnetic and free of nickel. Like other high chromium ferritic grades it has limited toughness at low temperature and is not used for cryogenic or heavy impact service.
Supply Standards for 442 Tube
Plate, sheet and strip in 442 are covered by ASTM A176, and welded tube by IS 17876 in India. Seamless 442 tube is produced to the purchase specification, using ASTM A268 general requirements where the buyer specifies them. Confirm the governing standard with your enquiry.
SS 442 Seamless Tube Specifications
Parameter | Details |
|---|---|
Grade | Stainless Steel 442 (AISI 442) |
UNS | S44200 |
Standards | To purchase specification (ASTM A176 for flat product) |
Type | Seamless, hot finished and cold drawn |
Outside Diameter | Tube and pipe sizes to the purchase specification, small and medium bore |
Length | Random lengths, fixed lengths and cut lengths |
Ends | Plain end and bevelled end |
Heat Treatment | Annealed |
Test Certificate | EN 10204 3.1, with 3.2 available on request |
SS 442 Chemical Composition
Element | Content (%) |
|---|---|
Carbon (C) | 0.20 max |
Chromium (Cr) | 18.00 to 23.00 |
Manganese (Mn) | 1.00 max |
Silicon (Si) | 1.00 max |
Phosphorus (P) | 0.040 max |
Sulfur (S) | 0.030 max |
SS 442 Mechanical Properties
Minimum tensile, yield and elongation values are set by the purchase specification and stated on the mill certificate. In the annealed condition 442 has a higher tensile strength than 430, in line with its higher chromium content.
SS 430 vs 442 vs 446
Property | SS 430 | SS 442 | SS 446 |
|---|---|---|---|
Chromium | 16 to 18% | 18 to 23% | 23 to 27% |
Carbon, max | 0.12% | 0.20% | 0.20% |
Scaling resistance | Good | Better | Highest of the three |
Magnetic | Yes | Yes | Yes |
For the highest scaling resistance, see our TP446 pipes and tubes.
Applications of SS 442 Seamless Pipes and Tubes
- Furnace parts and radiant tubes
- Burner and combustion chamber parts
- Heat treatment fixtures and kiln parts
- Hot air and flue gas ducting
Testing and Documentation
Every order of SS 442 seamless tube goes through the checks below at our testing facility or approved third party labs.
- Chemical analysis
- Tension test
- Flattening and flaring tests
- Hardness test
- Hydrostatic or eddy current test
- PMI and visual and dimensional inspection
Mill test certificates are issued to EN 10204 3.1, with 3.2 available on request. You can view our approvals on the certificates page.
Packing and Marking
Each length is marked with grade, size, heat number and manufacturer name. Ends are capped and tubes are packed in bundles or wooden boxes for export. Read more about our packing and despatch process.
Request a Quote for Stainless Steel 442 Seamless Pipes & Tubes
Send us the OD, wall thickness, governing specification, length and quantity, and our team will reply with price and delivery. Use the enquiry form or reach us through the contact page.
Frequently Asked Questions
What is Stainless Steel 442?
Stainless Steel 442 (UNS S44200) is a ferritic stainless steel with 18% to 23% chromium and up to 0.20% carbon, used for oxidation and scaling resistance at elevated temperature.
What is the difference between SS 430 and SS 442?
SS 442 has more chromium (18 to 23% against 16 to 18%), which gives better resistance to scaling in hot air and furnace gases.
Is SS 442 magnetic?
Yes. SS 442 is a ferritic stainless steel and is magnetic.
Which standard covers SS 442 seamless tube?
Seamless 442 tube is supplied to the purchase specification. ASTM A176 covers 442 plate, sheet and strip, and IS 17876 covers welded 442 tube in India.
