16Mo3 pipes – 1.5415 boiler tubes EN 10216-2
16Mo3 is a molybdenum-alloyed creep-resistant steel – the classic grade for boiler tubes, superheaters, live-steam and header tubes. Molybdenum improves high-temperature strength over unalloyed steel. ROHRLINE supplies 16Mo3 pipes and tubes to EN 10216-2 and EN 10217-2 with EN 10204 3.1 inspection certificates – worldwide.
Application & properties
16Mo3 is a molybdenum-alloyed creep-resistant steel – the classic grade for boiler tubes, superheaters, live-steam and header tubes. Molybdenum improves high-temperature strength over unalloyed steel.
- Boiler tubes and superheater coils
- Live-steam lines and headers
- Heat exchangers, furnace and process tubes
- Oil & petrochemical industry
Tell us the medium, temperature and pressure – we will check the grade with you.
Chemical composition
Typical values in wt.-% per EN standard (heat analysis).
| Element | Content (%) |
|---|---|
| C | 0.12–0.20 |
| Si | ≤ 0.35 |
| Mn | 0.40–0.90 |
| P | ≤ 0.025 |
| S | ≤ 0.010 |
| Cr | ≤ 0.30 |
| Mo | 0.25–0.35 |
| Ni | ≤ 0.30 |
Mechanical properties
Typical values at room temperature per EN standard.
| Property | Value |
|---|---|
| Yield strength Rp0.2 (t ≤ 16 mm) | ≥ 280 MPa |
| Tensile strength Rm | 450–600 MPa |
| Elongation A | ≥ 22 % |
| Impact energy KV | ≥ 40 J |
Standards, equivalents & product forms
| Topic | Detail |
|---|---|
| Standards | EN 10216-2 (tubes), EN 10217-2, EN 10253-2, EN 10028-2 (plate) |
| ASME/ASTM equivalent | ~ ASTM A335 P1 · A182 F1 |
| Material no. | 1.5415 |
| Short name / aka | Molybdenum steel · boiler tube |
We supply 16Mo3 as pipes, flanges and fittings – seamless or welded, on request with an EN 10204 3.1 / 3.2 mill certificate.
Supply programme & machining
| Item | Details |
|---|---|
| Dimensions (pipe) | Programme range: outside Ø 10.2 to 2,032 mm · DN 6 to DN 2000 · all standard wall thicknesses; available sizes depend on grade and standard |
| As flange & fitting | DN 10 to DN 1200 · PN 6 to PN 400 · Class 150 to Class 2500 to ASME B16.5 (to NPS 24), above that ASME B16.47 to Class 900 |
| Lengths & cutting | Mill lengths, sawn fixed lengths and fitting pieces from 0.1 to 12 m – sawn and bevelled |
| Minimum quantity | From a single item – from one fitting piece to the complete piping system |
| Availability | Common grades and sizes available at short notice, special sizes procured per project |
| Lead time | Standard sizes usually 3–5 working days; the binding date is confirmed with the quote |
| Machining | Sawing and bevelling, roll grooving for grooved couplings, threading to EN 10226, drilling, facing, bending with special radii |
| Surface | Blasting Sa 2½, primer and top coat, powder coating in RAL shades, galvanising to EN ISO 1461, PE coating to DIN 30670 |
| Certificates | Mill certificate 2.2, inspection certificate 3.1 to EN 10204 (standard with machining), 3.2 with notified body on request |
| Testing | Non-destructive testing by ultrasound, eddy current and X-ray, pressure test report on request |
These figures describe our supply programme. Which size is actually available in this grade is clarified with your enquiry – you usually receive the quote the same day.
We clarify availability, price and inspection certificate with your enquiry.
Frequently asked questions about 16Mo3
Up to what temperature can 16Mo3 be used?
As a creep-resistant steel, 16Mo3 is suitable for continuous service up to approx. 530 °C.
What is 16Mo3 mainly used for?
Above all for boiler and superheater tubes, live-steam lines and headers in power and plant engineering.
What is the ASME equivalent of 16Mo3?
16Mo3 roughly corresponds to ASTM A335 P1 (tube) and A182 F1 (forgings).
Which dimensions and certificates does ROHRLINE supply for 16Mo3?
ROHRLINE supplies 16Mo3 in the following range: Programme range: outside Ø 10.2 to 2,032 mm · DN 6 to DN 2000 · all standard wall thicknesses; available sizes depend on grade and standard. Documentation: Mill certificate 2.2, inspection certificate 3.1 to EN 10204 (standard with machining), 3.2 with notified body on request. Delivery worldwide; the binding date is confirmed with the quotation.
Components in 16Mo3 pipes
We supply these ready-to-install parts in this grade – to your drawing, tested and documented.
Pipe spools (prefabricated piping assemblies) are piping sections…
Headers bring steam, water or gas together and distribute it again. We…
Bent tube strings for the hottest part of the boiler
The plate in which the boiler tubes end
Bent tube runs that take up or give off heat
Boiler tubes rarely arrive on site in mill lengths. We supply them…
The gas-tight wall of the furnace
The economiser (ECO, feedwater preheater) uses the residual heat of…
Spare parts for steam, hot-water and heat recovery boilers
Special flanges, collars and pipe fittings to drawing and works…
Typical industries
In a waste boiler it is not pressure that decides service life but the…
In boiler making the date hangs on the documentation, not on the…
In a heat network expansion and tightness are the real subjects, not…
In a refinery high temperatures, hydrogen and sulphur come together
Request 16Mo3?
Grade, standard, size, pressure rating and quantity are enough – on request with an EN 10204 3.1 / 3.2 mill certificate. Your quote usually the same day.
All data are typical values per the relevant EN standards for first orientation – without warranty. The applicable standard and the mill certificate of the delivery are decisive.