Overview
We supply molybdenum-bearing ferritic 444 / EN 1.4521. Send the product standard, form, service inputs and inspection scope for a quote.
Standards & Designations
- 444
- EN 1.4521 X2CrMoTi18-2
State the selected designation, complete product standard, edition and purchaser specification in the RFQ and purchase description. Similar grade names are not automatically interchangeable.
Chemical Composition
444 is a molybdenum-containing stabilized ferritic grade. Compare it with 441 for wet-corrosion demands and with 316Ti for heat-transfer equipment; neither comparison authorizes universal chloride-service substitution.
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| Property | Value | Unit |
|---|---|---|
| C | 0.02 | mass % |
| Cr | 18.0 | mass % |
| Mo | 2.0 | mass % |
| Nb | Added | mass % |
| Ti | Added | mass % |
Reference basis: Supra 444 / EN 1.4521 · flat product · typical producer values · room temperature · typical values.
Mechanical Properties
Specify delivery condition and forming requirements for the component. Ferritic grades do not share the elevated-temperature load behavior of austenitic furnace grades.
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| Property | Value | Unit |
|---|---|---|
| 0.2% proof strength, Rp0.2 | ≥320 | MPa |
| Tensile strength, Rm | 420–640 | MPa |
| Elongation after fracture | ≥20 | % |
Reference basis: Supra 444 / EN 1.4521 · cold-rolled strip and sheet · solution annealed · room temperature · ranges.
Physical Properties
Ferritic material is magnetic and generally expands less than austenitic stainless steel. Geometry and joining details still need expansion allowance.
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| Property | Value | Unit |
|---|---|---|
| Density at 20°C | 7.7 | kg/dm³ |
| Modulus of elasticity at 20°C | 220 | GPa |
| Thermal expansion, 20–100°C | 10.4 | 10⁻⁶/K |
| Thermal conductivity at 20°C | 23 | W/m·K |
| Specific heat capacity at 20°C | 430 | J/kg·K |
| Electrical resistivity at 20°C | 0.80 | µΩ·m |
Reference basis: Supra 444 / EN 1.4521 · flat product · typical producer values · room temperature · typical values.
High-Temperature Characteristics
Match the grade to exhaust or wet-corrosion conditions rather than selecting by a furnace temperature alone. Weld condition and condensate chemistry can be decisive.
Available Product Forms
Choose the form that fits the component geometry and fabrication plan, then use its product page to prepare dimensions, finish, processing, inspection and packing requirements.
The product-form list shows our regular supply capability. The dated stock table shows only current and common inventory; a form or boundary size not listed there is not a supply limit.
Common specifications and stock
Stock snapshot:
The product-form list shows our regular supply capability. The dated stock table shows only current and common inventory; a form or boundary size not listed there is not a supply limit.
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| Product form | Specification | Surface / condition | Availability |
|---|---|---|---|
| Cold-rolled sheet | 2 × 1219 × 2438 mm | 2B · Annealed | In stock |
| Hot-rolled plate | 5 × 1219 × 2438 mm | No.1 · Annealed | In stock |
| Hot-rolled coil | 4 × 1219 mm coil | No.1 · Annealed | In stock |
| Slit strip | 1 × 100 mm coil | 2B · Annealed | In stock |
Please confirm current quantity, tolerances, documents and delivery in the written quotation.
Available Dimensions
We quote dimensions and tolerances for your selected form and quantity; there is no single stock-size range covering every grade and form.
Processing & Welding
Share the drawing, delivery condition, forming method, joint design, filler requirements, WPS/PQR, heat input, cleaning or passivation and NDT scope. Drawing geometry and the ordered standard help the fabricator prepare the process plan and qualified procedure.
Processing & WeldingIndustry Applications
Consider exhaust components, fume ducts and heat-transfer equipment, with grade selection based on dry gas or wet-condensate exposure.
Inspection Options
- MTC identifying the heat, grade, ordered standard and reported test results.
- Dimensional, surface, traceability and marking records specified by the purchase order.
- NDT, PMI, third-party inspection or additional test reports only when ordered.
- EN 10204 3.1 wording only when the issued certificate explicitly carries that type.
Related Grades
Compare grade families, product forms and service inputs before requesting an alternative. Any substitution must follow the governing standard, design basis and project approval process.
What to Send for a Quote
Include the exact grade designation, governing product standard and edition, product form, dimensions, condition, quantity, service inputs, inspection scope, certificate type, packing and destination.
We normally reply within 1 business day. Technical enquiries may require additional review.