DIN 17102 WStE380 Steel Plate | WStE380 Fine Grain Steel
What is DIN 17102 WStE380 Steel?
DIN 17102 WStE380, also written WStE 380, WSTE380, DIN17102 WStE380 and WStE380 steel plate, is a weldable normalized fine-grain structural steel under DIN 17102. The W prefix means Warm — elevated-temperature quality. Yield in the thin band is still 380 MPa. Tensile at ≤70 mm is still typically 510–650 MPa. This grade sits above WStE355 and below WStE420. Modern EN books jump from P355NH to P420NH. WStE380 is the old German warm step that stayed between those two. SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) for this grade. Plate is produced to DIN 17102 and shipped to buyers in the USA, Europe, Middle East and Southeast Asia.
A purchase order that only says “380 fine grain warm” is incomplete. Write DIN 17102 WStE380. Do not ship StE380 against a WStE380 drawing because StE is basic quality. Do not ship TStE380 against a WStE380 drawing because T is low-temperature quality. Do not ship WStE355 or WStE420 because the yield step is wrong.
DIN 17102 is a legacy specification. New European pressure work usually picks P355NH or P420NH. There is no equally clean single EN name for WStE380. Replacement projects still name WStE380 when the original German file stays on that number.
This page is not DIN 17100 St52-3. It is not SA516 Gr.70. It is not SA515 Gr.70. It is not ASTM A36 steel plate. It is not QT alloy under ASME SA387 or ASME SA543.
Company scope: global steel mill sourcing partner – SHH STEEL.
Material Specification
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Grade | DIN 17102 WStE380 / WStE 380 | Confirmed |
| Product Specification | DIN 17102 | Applied |
| Quality letter | W = elevated temperature | Confirmed |
| Steel type | Killed, weldable, fine grain | Confirmed |
| Usual delivery | Normalized | Confirmed |
| Yield idea | 380 MPa at ≤16 mm | Confirmed |
| Strength position | Between WStE355 and WStE420 | Confirmed |
| Supply role | Global steel mill sourcing partner | SHH STEEL |
| Markets | USA, Europe, Middle East, Southeast Asia | FOB / CIF as ordered |
| Certification | EN 10204 3.1 or 3.2 / third-party | As ordered |
This plate sits in structural steel plates, high strength low alloy plates and next to pressure vessel steel plates. ASME carbon comparisons belong on ASME SA516 and ASME SA515, not as automatic substitutes.
Chemical Composition
DIN 17102 WStE380 / WStE 380 uses the same 380 chemistry family as StE380. TStE380 and EStE380 tighten P and S. Product analysis is slightly wider than heat analysis. SHH STEEL reports heat analysis on every certificate and product analysis when the order names it.
Heat Analysis and Product Analysis — DIN 17102 WStE380 (typical limits)
| Element | Heat Analysis (%) | Product Analysis (%) |
|---|---|---|
| Carbon (C), max | 0.20 | 0.22 |
| Silicon (Si) | 0.10 – 0.50 | 0.10 – 0.55 |
| Manganese (Mn) | 1.00 – 1.65 | 0.95 – 1.70 |
| Phosphorus (P), max | 0.035 | 0.040 |
| Sulfur (S), max | 0.030 | 0.035 |
| Nitrogen (N), max | 0.020 | 0.022 |
| Aluminium (Al), min (total, when used for grain) | 0.020 | 0.018 |
| Chromium (Cr), max | 0.30 | 0.35 |
| Copper (Cu), max | 0.20 | 0.25 |
| Molybdenum (Mo), max | 0.08 | 0.10 |
| Nickel (Ni), max | 0.30 | 0.35 |
| Niobium (Nb), max | 0.05 | 0.06 |
| Vanadium (V), max | 0.10 | 0.12 |
| Nb + Ti + V, max | 0.12 | 0.14 |
WStE355 manganese is 0.90–1.65. WStE380 keeps a similar manganese idea and uses the same residual caps. Do not treat a product-analysis result that sits between heat and product limits as a failed heat. The heat must meet the heat column. The finished plate must meet the product column when product analysis is ordered. If a Houston, Rotterdam or Jebel Ali specification tightens P and S below the table, write that on the order.
Mechanical Properties
Room-temperature yield and tensile follow the 380 family. Elevated-temperature proof stress is why the W letter exists.
Room-temperature properties — DIN 17102 WStE380 (typical published bands)
| Thickness (mm) | Yield ReH min (MPa) | Tensile Rm (MPa) |
|---|---|---|
| ≤16 | 380 | 510 – 650 (≤70 mm band) |
| 16 – 35 | 370 | 510 – 650 |
| 35 – 50 | 360 | 510 – 650 |
| 50 – 70 | 350 | 510 – 650 |
| 70 – 100 | 340 | 500 – 640 |
| 100 – 150 | 330 | 490 – 630 |
| Density | 7.85 g/cm³ | 7.85 g/cm³ |
Do not quote 380 MPa yield on an 80 mm plate. When the order asks for elevated-temperature proof stress, name the test temperature. Do not treat 510–650 MPa tensile as permission to stamp SA516 Gr.70, SA515 Gr.65 or SA204 Gr.B.
Impact for WStE380 is not the TStE / EStE low-temperature package. Write the test temperature on the order. If the drawing names −50 °C, the grade is probably TStE380 or EStE380, not WStE380.
How StE / WStE / TStE / EStE Differ at 380
| Grade | Quality idea | Notes |
|---|---|---|
| StE380 | Basic / room-temperature fine grain | Same yield idea |
| WStE380 | Elevated temperature (Warm) | This page |
| TStE380 | Low temperature (Tief) | Colder impact |
| EStE380 | Special low temperature | Tightest C / P / S |
Same 380 MPa yield idea. Different impact package and different design temperature. SHH STEEL will not ship WStE380 against a TStE380 impact temperature without a written change.
Material Comparison
| Grade | Route | Strength / service idea | Swap? |
|---|---|---|---|
| DIN 17102 WStE355 | Normalized fine grain | 355 / 490–630, warm quality | No |
| DIN 17102 StE380 | Normalized fine grain | 380 / ~510–650, basic quality | No |
| DIN 17102 WStE380 | Normalized fine grain | 380 / ~510–650, warm quality | This page |
| DIN 17102 WStE420 | Normalized fine grain | 420 yield, warm quality | No |
| P355NH | EN 10028-3 | Maps to WStE355 | No |
| P420NH | EN 10028-3 | Maps to WStE420 | No |
| SA516 Gr.70 | Carbon vessel | 260 / 485–620 | No |
| SA515 Gr.70 | Intermediate/high-temp carbon | Different book | No |
| SA204 Gr.A | Mo vessel | Different book | No |
SA203 Gr.A, SA299 Gr.B and SA737 Gr.B are vessel or HSLA plates. None of them is WStE380.
Elevated-Temperature Fine-Grain Service at 380 MPa
DIN 17102 WStE380 / WStE 380 is selected for welded structures and pressure equipment that need fine-grain toughness plus a warm-service designation at the 380 MPa step: process vessels, boilers, heat exchangers and steelwork still calculated to the old German book. It is not a free substitute for WStE420. It is not automatically an ASME Section VIII plate. If the vessel is ASME, the drawing should name an ASME or ASTM grade such as SA516 Gr.70, SA515 Gr.60 or SA204 Gr.C.
SHH STEEL supplies this plate to fabricators in the United States, Europe, the Middle East and Southeast Asia. It is not nickel low-temp plate like SA203 Gr.D or SA203 Gr.E. It is not QT Ni-Cr-Mo like SA543 Type B Cl.2. It is not Cr-Mo like SA387 Gr.22 Cl.2 or SA387 Gr.11 Cl.2. Stainless inquiries belong on ASME SA240 or ASTM A240.
Weldability
WStE380 is killed fine-grain C-Mn steel at a higher strength step than WStE355. Welding is production welding, and Code welding when the equipment is a vessel.
Qualify procedures to the applicable code. For ASME work that happens to use a dual-named plate, use ASME Section IX. Consumables should match the 510–650 MPa tensile band, not a SA387 Gr.12 Cl.2 Cr-Mo procedure and not a QT procedure from SA517 Gr.Q. Preheat follows thickness and hydrogen control. The fabricator owns the WPS. SHH STEEL can share mill heat data for that review.
Heat Treatment and Delivery Condition
Usual delivery from SHH STEEL is normalized DIN 17102 WStE380 / WStE 380 plate. Fine-grain practice and normalize are the product idea. As-rolled shipment is a special agreement.
If the vessel will see PWHT, test coupons shall follow a simulated cycle when the order names it. This is not the QT route used on SA738 Gr.A or SA737 Gr.C. Special heat treatment, extra simulation or third-party hold points add time. Plan about two months when those extras are on the order.
The certificate lists DIN 17102 WStE380 (and WStE 380 if requested); heat number; heat analysis; product analysis when ordered; tensile results to the correct thickness column; normalize statement; impact and elevated-temperature proof stress when ordered. Certificates may be EN 10204 3.1 or EN 10204 3.2. Dual marking to P420NH is not automatic. That EN name sits closer to WStE420.
Dimensions
Usual supply range from SHH STEEL for WStE380 fine grain steel:
- Thickness: commonly 6 mm – 150 mm. Confirm any request above 150 mm against mill capability
- Width: 1500 mm – 4000 mm
- Length: 3000 mm – 12000 mm
- Cut-to-length plates and nest sizes inside those limits
Ship plate inquiries belong on shipbuilding steel plates or BV Rules. Weathering plate belongs on EN 10025-5 or Corten A/B. TMCP fine-grain structural belongs on EN 10025-4. QT structural belongs on EN 10025-6. Ordinary structural belongs on EN 10025-2 or JIS G3106.
Tolerances
Dimensional limits follow the mill rolling standard named on the order, commonly EN 10029 for plate when the buyer is in Europe. Do not apply ASTM A36/A36M structural tolerances to a DIN fine-grain plate without writing them. UT to EN 10160 or ASTM A435 / A577 / A578 is added when the order names it.
Supplementary Requirements
Most export DIN 17102 WStE380 / WStE 380 orders add extras. SHH STEEL does not assume them.
Charpy details. Temperature, energy, location and orientation. Warm quality is not a −50 °C grade.
Elevated-temperature proof stress. Required when the calculation uses warm allowable stress. Name the test temperature.
Product analysis. Add this when the destination file wants finished-plate chemistry, not only ladle chemistry.
Simulated PWHT. When the equipment will be stress-relieved.
NDE. UT per the named method.
Z-direction / through-thickness testing. When the drawing names Z15 / Z25 / Z35.
Third-party. EN 10204 3.2, with inspectors arranged for US, European or Middle East documentation packages.
Equivalent Material Grades
These names are project-comparison grades. They are not automatic substitutes.
| Designation | Standard / region | Notes |
|---|---|---|
| DIN 17102 WStE380 / WStE 380 | DIN 17102 | Name on this page |
| StE380 | DIN 17102 | Basic quality, same yield idea |
| WStE355 | DIN 17102 | Lower warm step ≈ P355NH |
| WStE420 | DIN 17102 | Higher warm step ≈ P420NH |
| TStE380 | DIN 17102 | Low-temperature sister |
| SA516 Gr.60 | SA-516 | Vessel carbon, different book |
| SA515 Gr.60 | SA-515 | Intermediate/higher temperature carbon |
| ASTM A516 | A516 family | Related vessel family |
| ASME SA515 | SA-515 family | Related high-temp carbon family |
ASME SA662 is not WStE380.
Applications
| Industry | Typical components |
|---|---|
| Elevated-temperature fine-grain equipment | DIN 17102 WStE380 shells and WStE 380 plates |
| Process vessels and hot service steelwork | WSTE380 courses |
| Dual-certified export | WStE380 plate from SHH STEEL when the drawing keeps the DIN name |
| Fabrication | WStE380 cut to nest sizes |
Stainless inquiries belong on stainless steel products, JIS G4305 or AISI stainless. Other vessel comparisons: SA203 Gr.B, SA302 Gr.C, A516 Grade 70, SA533 Type C Cl.1, SA517 Gr.P, SA738 Gr.C.
Global Delivery & Markets
SHH STEEL is a global steel mill sourcing partner with mill partnerships in China. We supply ASTM, ASME, EN, DIN and JIS steel to the USA, Europe, Middle East and Southeast Asia. Origin is mill-direct, China origin. We do not treat DIN 17102 WStE380 as an Asia-only stock item. Inquiry packages are written for fabricators and EPC buyers in Houston, Rotterdam, Antwerp, Jebel Ali, Dammam, Singapore and surrounding ports.
Typical trade terms:
- FOB Shanghai
- CIF Houston
- CIF Rotterdam
- CIF Jebel Ali
- Other CIF / CFR ports on request (Los Angeles, New York, Hamburg, Genoa, Jeddah, Mundra, Ho Chi Minh)
Typical lead time for DIN 17102 WStE380 / WStE 380:
- Ex-stock / ready plate: about 5–7 days after order confirmation, subject to actual warehouse size and cutting
- Mill rolling, standard normalize: about 45 days
- Special heat treatment, simulated PWHT, 3.2 hold or extra NDE: about 2 months
Documents travel with the cargo: mill certificate, packing list, commercial invoice, bill of lading, and EN 10204 3.1 or 3.2 as ordered. Third-party inspection can be arranged before loading for US, European or Middle East projects. Packing is seaworthy, with edge protection and marking in English as specified on the order.
If the buyer actually needs WStE420 / P420NH, say so on the inquiry. If the buyer needs a PED / 3.2 file, say so on the inquiry. Do not assume a domestic Chinese certificate format will pass at destination.
Why Choose SHH STEEL
SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin). We supply ASTM / ASME / EN / DIN / JIS steel to the USA, Europe, the Middle East and Southeast Asia. On DIN 17102 WStE380 / WStE 380 that means mill pricing, WStE380 chemistry reported as heat analysis and as product analysis when ordered, recorded normalize, tensile results to the correct thickness column, 380 MPa yield in the thin band, 3.1 as standard and 3.2 when specified. Trade terms include FOB Shanghai and CIF Houston / Rotterdam / Jebel Ali.
We keep the prefix and the number on the order. WStE380 is not StE380. WStE380 is not TStE380. WStE380 is not WStE355. WStE380 is not WStE420. DIN 17102 is not DIN 17100. WStE380 is not SA516 Gr.70. WStE380 is not SA387 Gr.22 Cl.2. If the drawing names −50 °C impact, we will not ship WStE380 and call it TStE380.
Company scope: global steel mill sourcing partner – SHH STEEL.
FAQ
- What names are used for DIN 17102 WStE380?
- Buyers write DIN 17102 WStE380, WStE 380, WSTE380, DIN17102 WStE380 and WStE380 steel plate. Some inquiries only say “380 NH fine grain” and expect the mill to guess the DIN name. SHH STEEL prints the exact wording on the purchase order and on the certificate. If you need both a DIN name and an EN comparison name, write both.
- What does the W in WStE380 mean?
- Warm. Elevated-temperature quality. The plate is still normalized fine-grain steel at 380 MPa yield. The W letter tells the mill and the designer that elevated-temperature proof stress and a warm-service impact package belong on the order. It does not mean the plate is Cr-Mo alloy and it does not mean the plate can replace SA387 Gr.22 Cl.2.
- What is the yield strength of WStE380?
- 380 MPa minimum at ≤16 mm. Yield falls as thickness rises: 370 MPa at 16–35 mm, 360 MPa at 35–50 mm, 350 MPa at 50–70 mm, then lower still. Tensile on product ≤70 mm is typically 510–650 MPa. Confirm the thickness column before you use 380 MPa in a calculation for thick plate.
- Does SHH STEEL report product analysis for WStE380?
- Heat analysis is on every certificate. Product analysis is added when the order names it. Product limits are slightly wider than heat limits. A plate can meet product analysis and still fail if the ladle was outside the heat column. Write “heat + product analysis” on the inquiry if the destination file wants both.
- Is WStE380 the same as P355NH or P420NH?
- No. P355NH maps to WStE355. P420NH maps to WStE420. WStE380 is the intermediate warm step and has no equally clean single EN name. Dual marking is possible only when chemistry, tensile, impact and elevated-temperature proof stress all fit the named EN edition.
- Is WStE380 the same as StE380 or TStE380?
- No. StE380 is basic / room-temperature quality. TStE380 is low-temperature quality. WStE380 is elevated-temperature quality. Yield numbers look the same. Impact temperature and proof-stress testing do not. Do not ship one letter against another because the number 380 matches.
- Does WStE380 replace SA515 Grade 70 or SA516 Grade 70?
- o. SA516 Gr.70 is ASME carbon vessel plate at 260 MPa yield. SA515 Grade 70 is intermediate/high-temperature carbon vessel plate. WStE380 is DIN fine-grain plate. A Section VIII vessel should name an ASME or ASTM grade unless the specification explicitly accepts DIN 17102.
- What impact test should I write on a WStE380 order?
- Write the temperature, energy, location and orientation. Do not write only “impact tested.” Warm quality is not a −50 °C grade. If you need −40 °C or −50 °C, the grade is probably TStE380 or EStE380. If you need elevated-temperature proof stress, write that temperature as well.
- Can SHH STEEL ship DIN 17102 WStE380 outside Asia?
- Yes. SHH STEEL is a global steel mill sourcing partner. We supply this plate to the USA, Europe, the Middle East and Southeast Asia on FOB Shanghai or CIF Houston / Rotterdam / Jebel Ali. Inquiry packages can be prepared for Houston, Rotterdam, Antwerp, Jebel Ali, Dammam and Singapore documentation practice.
- What is the delivery time for WStE380?
- Ex-stock about 5–7 days, subject to warehouse size and cutting. Standard mill normalize about 45 days. Special heat treatment, simulated PWHT, extra NDE or EN 10204 3.2 inspection about 2 months.
- Can SHH STEEL issue EN 10204 3.2 for WStE380?
- Yes. EN 10204 3.1 is standard. EN 10204 3.2 is arranged when written on the order. Third-party inspectors can attend before loading for US, European or Middle East projects.
- What is the density of WStE 380?
- 7.85 g/cm³.
Conclusion
DIN 17102 WStE380 Steel Plate, also searched as WStE 380, WSTE380 and DIN17102 WStE380, is weldable normalized fine-grain steel under DIN 17102 for elevated-temperature service at the 380 MPa yield step, typically 510–650 MPa tensile at ≤70 mm, sitting between WStE355 and WStE420. Whether the inquiry says DIN 17102 WStE380, WStE 380 or WStE380 steel plate, SHH STEEL as a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) supplies plate with WStE380 chemistry, heat and product analysis when ordered, recorded normalize, and EN 10204 3.1 or 3.2 certification.
SHH STEEL supplies DIN 17102 WStE380 / WStE380 Fine Grain Steel to the USA, Europe, the Middle East and Southeast Asia for work that actually names this grade. FOB Shanghai / CIF Houston / Rotterdam / Jebel Ali.
Contact SHH STEEL for mill rolling, stock inquiry, impact testing, elevated-temperature proof stress, 3.2 inspection or a quotation.
DIN 17102 WStE380 Steel Plate, WStE 380, WSTE380, DIN17102 WStE380, elevated temperature fine grain steel, WStE380 supplier, global steel mill sourcing partner SHH STEEL
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