Stainless Steel 434 Tubes, Stainless Steel 434 Pipes, SS 434 Pipes, SS 434 Tubes, SUS 434 Tubes, AISI 434 Tubes
Stainless Steel 434 Pipes & Tubes (UNS S43400, EN 1.4113) are molybdenum-bearing ferritic stainless products that improve on 430 with better pitting resistance, good oxidation resistance to about 816 °C, and dependable magnetic behavior. They are a strong fit for trim, brackets, guards, conduits, appliance parts, and light process tubing in mild chloride exposure.
Amardeep Steel Center is a trusted Manufacturer, Supplier, and Exporter of Stainless Steel 434 Pipes & Tubes worldwide. We supply SS 434 Pipes & Tubes in both seamless and welded options, tailored to meet client requirements. With supply routes covering automotive, process, and utility industries, we provide product testing such as PMI, hydro, NDT, along with EN 10204 3.1 MTCs. Being a reliable stainless steel supplier, Amardeep Steel Center ensures you receive not only high-quality materials but also excellent technical support and timely delivery.
Specifications of Stainless Steel 434 Pipes & Tubes
434 is widely supplied as ferritic stainless steel tubing. For process or heat-transfer service, mills and stockists commonly use ASTM A268 for ferritic stainless seamless and welded tubes. For ornamental and structural uses, welded mechanical tubing is supplied to ASTM A554. Confirm acceptance criteria and any pressure-piping requirements at RFQ stage.
| Item | Details |
|---|---|
| Grade | 434 Stainless, UNS S43400, EN 1.4113, AISI 434 |
| Typical tube standards | ASTM A268 ferritic seamless and welded tubing; ASTM A554 welded stainless mechanical tubing |
| Routes | Seamless cold drawn, welded TIG or laser |
| Size programs | Inch and metric OD programs by mill availability; NB pipes by agreement |
| Lengths and ends | SRL, DRL, cut lengths; plain or beveled; deburred |
| Finishes | Pickled, bright annealed, brushed or polished as required |
Chemical Composition of Stainless Steel 434 Pipes & Tubes
Type 434 gains its improved pitting resistance from molybdenum. Typical ranges below are commonly published for UNS S43400. Always purchase to an agreed standard and MTC.
| Element | % |
|---|---|
| C | ≤ 0.08 |
| Mn | ≤ 1.00 |
| Si | ≤ 0.60 |
| P | ≤ 0.040 |
| S | ≤ 0.030 |
| Cr | 16.00 – 18.00 |
| Mo | 0.75 – 1.25 |
| Ni | ≤ 0.50 |
| Cu | ≤ 0.50 |
| Fe | Balance |
Mechanical Properties of Stainless Steel 434 Pipes & Tubes
Values below are representative of annealed 434 at room temperature. Cold work raises strength. Use the governing product standard and your PO for acceptance.
| Property | Typical Value |
|---|---|
| Tensile strength (UTS) | 450 – 540 MPa |
| Yield strength (0.2%) | 205 – 440 MPa |
| Elongation | 22 – 32% |
| Hardness | HRB ≤ 89 |
Physical Properties of Stainless Steel 434 Pipes & Tubes
Ferritic stainless steels have higher thermal conductivity and lower thermal expansion than austenitic grades, which helps in fixtures and formed parts. Values shown are typical near 20–100 °C.
| Property | Value |
|---|---|
| Density | ~7.74 g/cm³ |
| Modulus of Elasticity | ~200 GPa |
| Thermal Conductivity (100 °C) | ~26 W/m·K |
| Electrical Resistivity (20 °C) | ~60 µΩ·cm |
| Coefficient of Thermal Expansion (0–100 °C) | ~10.4 µm/m·K |
| Melting Range | ~1482 – 1532 °C |
Equivalent Grades of Stainless Steel 434 Pipes & Tubes
Use these cross-references to align specifications globally. Verify chemistry and properties on the MTC rather than relying only on the name.
| System | Grade / Designation |
|---|---|
| UNS | S43400 |
| EN | 1.4113 |
| EN name | X6CrMo17-1 |
| AISI | 434 |
| JIS | SUS 434 |
| BS | 434S20 |
Applications of Stainless Steel 434 Pipes & Tubes
Pick 434 Stainless Steel Pipes & Tubes when you need better chloride splash resistance than 430, steady magnetic response, and neat formed finishes. For heavy chlorides or welded pressure service, many designers look at stabilized ferritics like 444 or austenitic 316L.
- Automotive trim, brackets, guards and conduits: Used for exterior moldings, supports, battery trays, hose guides and cable conduits where appearance and oxidation resistance matter.
- Appliance and kitchen equipment: Found in range hoods, liners, dishwasher panels, splash guards and light utility tubing in mild indoor environments.
- Light process and utility tubing: Suitable for non-pressure utility lines, machine guards and rails in low to moderate chlorides. For washdown or marine splash, upgrade to 316L or a moly-stabilized ferritic.
FAQ’s about Stainless Steel 434 Pipes & Tubes
434 vs 430 – what changes in practice?
Both are ferritic chromium grades. 434 adds molybdenum, which lifts pitting resistance and improves performance against de-icing salts and mild chlorides compared with 430.
Is 434 weldable for tube fabrications?
Yes, with qualified procedures and heat input control. Clean thoroughly after welding to recover corrosion resistance. For critical or pressure welds, consider stabilized ferritics or austenitic alternatives.
Which standards typically cover Stainless Steel 434 Tubes?
Ferritic tubing is commonly supplied to ASTM A268. Welded mechanical tubing for ornamental or structural work is supplied to ASTM A554. Confirm grade coverage and test clauses in your RFQ.
Is 434 magnetic?
Yes. As a ferritic stainless steel it is magnetic in all conditions, which is useful for brackets, frames and fixtures.
How does the Stainless steel 434 price move?
Price depends on OD and wall, route and finish, tolerance class, testing and lot size. Alloy surcharges fluctuate with molybdenum, though nickel exposure is low compared with austenitics. Share sizes and quantities for a firm price.
Any forming or machining notes?
434 machines and forms better than many austenitics due to its ferritic structure, though stronger tooling may be needed versus low-carbon steel. It cannot be hardened by heat treatment.
