Creep-resistant boiler steel
13CrMo4-5 / 1.7335 pressure vessel steel
13CrMo4-5 is a chromium-molybdenum boiler steel for higher temperatures than 16Mo3.
- Delivery conditions
- +NT / +QT to standard
- Also known as
- 1.7335, 13CrMo44, AISI T11 / P11, SS 2216, P11, P12
Designations
- W.Nr.
- 1.7335
- EN standard
- 13CrMo4-5
- DIN
- 13CrMo44
- AISI/SAE
- T11 / P11
- SS (Sweden)
- 2216
- UNS
- K11597
- Group
- Pressure vessel steel
What it is used for
Steam and process pipe, flanges and plate in the Cr-Mo class.
Limits
16Mo3 as the step down. 10CrMo9-10 when chromium and Mo need to go further up.
Delivery
We source 13CrMo4-5 from European mill partners as round bar, flat bar, square bar, seamless tube, welded tube, cut to your dimensions and ship the certificate with the material. Typical condition: +NT / +QT to standard. From a single cut piece to larger lots — with no minimum charge, so you do not have to buy a full commercial length to get what you need.
Certificates and documentation
13CrMo4-5 can be supplied with a material certificate to EN 10204, depending on producer, dimension and the requirements specified for the delivery. On pressure-bearing material the certificate is part of the product: standard, condition and tests must be on the enquiry, and 3.2 must be agreed before the material is locked at the mill. EN 10204 3.1 can be supplied on a wide range of our materials — 3.2 and third party by project, when the mill can issue it.
Dimension programme
| Form | Range | Note |
|---|---|---|
| Round bar | Bar to order | When the form is bar, not plate. |
| Seamless tube | Ø6–Ø2000 mm | Seamless DIN/EN. Wall to EN 10220. State DN, wall and 3.1/3.2. |
| Welded tube | Ø6–Ø2000 mm | Welded DIN/EN. Wall to EN 10220. State weld seam and certificate. |
| Fittings | Ø12–Ø2000 mm | ASME 1/2–60″ (Ø15–Ø1524 mm). Type A and B. Not a stock statement. |
| Flanges | Ø14–Ø2000 mm | ASME 1/2–60″ (Ø15–Ø1524 mm). PN 6–400. Not a stock statement. |
The range is a delivery programme, not a stock statement. Length is cut to your drawing.
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Send your enquiry
State grade, dimensions and quantity — or attach a drawing. We reply with a quote.