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Home > Our Products > Boiler & Pressure Vessel Steel Plates > Grade / Specification > DIN 17155 HII / 17Mn4 Plates
Hindustan Steel Corporation supplies DIN 17155 HII and 17Mn4 boiler-quality steel plates, widely used in the fabrication of pressure vessels, boilers, and heat exchangers operating at elevated temperatures. These German standard grades offer excellent creep resistance, structural integrity, and weldability — ideal for the oil, gas, chemical, and power generation sectors.
Our plates are sourced from reputed mills and are available with 3.1/3.2 certification, IBR compliance, and custom processing services. DIN 17155 remains the backbone for legacy design codes and is compatible with European and international pressure vessel regulations.
DIN 17155 is a withdrawn but widely used German standard for weldable pressure vessel steels. Though superseded by EN 10028, its grades like HII and 17Mn4 continue to be used globally for high-temperature pressure applications.
These plates are typically supplied in normalized condition and are suitable for vessels operating with steam, hydrogen, and acidic gases.
DIN 17155 plates are used in a variety of industrial segments where pressure, heat, and corrosion resistance are essential:
They are also suitable for hydrogen service, fossil energy boilers, and acidic fluid pressure environments.
| Property | DIN HII | DIN 17Mn4 |
|---|---|---|
| Yield Strength (min) | 265 MPa | 275–295 MPa |
| Tensile Strength | 410–530 MPa | 440–590 MPa |
| Elongation (%) | ≥ 22% | ≥ 21% |
| Impact Energy | Notch tested @ -20°C | Good impact performance |
| Thickness Range | 6 mm – 100 mm | 6 mm – 80 mm |
Both materials offer excellent cold formability and welding performance, suitable for fabrication under ASME and IBR codes.
Although the DIN 17155 standard has been superseded by EN 10028, HII and 17Mn4 plates remain widely accepted due to their proven performance and legacy use in engineering specifications.
Here are some equivalent international grades:
| Standard | HII Equivalent | 17Mn4 Equivalent |
|---|---|---|
| ASTM | A516 Gr 60 (approx.) | A516 Gr 65 / SA537 (approx.) |
| EN 10028 | P265GH | P295GH / P355GH |
| IS (India) | IS 2041 Gr 265 | IS 2041 Gr 295 |
| JIS | SB410 | SB450 |
We can also supply dual-compliant plates for EN + DIN + ASME usage, including IBR-certified boiler projects.
Hindustan Steel Corporation offers a wide range of DIN 17155 HII and 17Mn4 plates, available from ready stock or with short mill lead times.
Available Range:
We also provide cut-to-length, CNC-profiled plates and custom-shaped pressure components with marking and traceability.
DIN 17155 HII and 17Mn4 plates are supplied in normalized condition, ensuring grain refinement, improved toughness, and resistance to stress rupture.
These treatments help ensure long-term strength and metallurgical stability under cyclic temperature and high-pressure exposure.
Both HII and 17Mn4 are highly weldable and formable, making them a reliable choice for complex fabrication processes.
We provide edge-prepped, UT-tested, and stamped plates ready for boiler shop or vessel yard usage.
We supply steel that meets thermal, pressure, and compliance expectations, helping you avoid rework, rejections, and costly shutdowns.
You may also consider these pressure vessel plate grades for similar or enhanced service:
Our metallurgists can help you pick the right grade for your vessel pressure, fluid media, and thermal exposure.
Hindustan Steel Corporation supplies DIN 17155 HII and 17Mn4 pressure vessel plates to both domestic and global markets, serving EPC contractors, boiler fabricators, and energy sector OEMs.
Key Export Destinations:
Packing Details:
We ensure damage-free delivery and code-compliant documentation, whether it’s IBR Form III for India or CE marking for Europe.
Choosing between DIN 17155 HII and 17Mn4 depends on operating stress, service fluid, and temperature range.
| Application Need | Suggested Grade |
|---|---|
| Standard steam/boiler use | HII |
| Slightly higher temperature/load | 17Mn4 |
| Better impact resistance | 17Mn4 (fine grain) |
| Cost-effective fabrication steel | HII |
| Hydrogen or acidic environments | 17Mn4 + HIC tested |
For legacy vessel designs referencing DIN standards, we ensure matching chemical and mechanical equivalence with traceable MTCs.
Our DIN 17155 boiler plates are fully certified and traceable, supporting domestic and international projects:
Whether you’re fabricating in Mumbai, Muscat, or Manila, we’ve got your documentation and quality covered.
For pressure equipment requiring enhanced strength and impact resistance, including hydrogen service.
It has been superseded by EN 10028 but is still widely used in legacy specs and globally accepted.
ASTM A516 Gr 60 is a close equivalent in terms of pressure performance.
Includes carbon (~0.2%), manganese (~1.2%), with silicon and trace elements.
Yes, it is usually supplied in normalized condition for strength and toughness.
Yes, both grades offer excellent weldability using standard procedures.
Yes, with Form III and heat-marked traceability.
Yes, impact test values can be provided on request for HII and 17Mn4.
Yes, especially for retrofits, upgrades, and older design code projects.
Yes, CE or PED certification can be provided where required.
Typically around 275 MPa in normalized condition.
Yes, TPI from SGS, Lloyds, TUV, DNV is available.
Absolutely, we offer cut, bevelled, and marked plates per drawing.
Ready stock plates can ship within 2–3 working days.
Request a Quote or Ask a Technical Question
Looking to source DIN 17155 HII / 17Mn4 boiler plates for your next project?
We’re ready to support you with:
[Download DIN 17155 Plate Datasheet PDF]
+91-22-66159018
+91-9820944724
sales@hindustansteel.com hindustansteel1@gmail.com
390/392, Ground Floor, Shankar Mansion, S.V.P. Road, Mumbai – 400004, India
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