EN 10028-2 13CrMo4-5 Steel Plate | 13CrMo4-5 1.25Cr-0.5Mo Vessel Plate
What is EN 10028-2 13CrMo4-5 Steel?
13CrMo4-5 is the 1.25Cr-0.5Mo grade in EN 10028-2. Buyers search EN 10028-2 13CrMo4-5, 13CrMo4-5 steel plate, 1.7335, 13CrMo4-5 equivalent and 13CrMo4-5 1.25Cr-0.5Mo vessel plate. The numbers mean about 1.0% chromium and 0.5% molybdenum. This page is not P355GH carbon plate and not 16Mo3 0.3Mo plate.
Yield is 300 MPa at ≤16 mm. Tensile is 450–600 MPa. Steel number is 1.7335. Delivery is usually normalized and tempered (+NT). SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) for this grade.
Do not ship 16Mo3 against a 13CrMo4-5 drawing. 16Mo3 has no 0.70–1.15% Cr. Do not ship SA387 Grade 11 Class 2 and call 1.25Cr-0.5Mo the same as 1.25Cr-0.5Mo Class 2 without checking class. The closest ASME comparison is SA387 Grade 12 Class 1 or SA387 Grade 12 Class 2. The closest Chinese comparison is 15CrMoR steel plate. Dual marking is possible only when chemistry, tensile, impact and delivery all fit.
Company scope: China steel mill agent SHH STEEL.
Material Specification
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Grade | EN 10028-2 13CrMo4-5 | Confirmed |
| Steel number | 1.7335 | Confirmed |
| Product specification | EN 10028-2 + EN 10028-1 | Applied |
| Steel type | Alloy special steel, 1.25Cr-0.5Mo | Confirmed |
| Usual delivery | +NT | Confirmed |
| Yield idea | 300 MPa at ≤16 mm | Confirmed |
| Tensile | 450–600 MPa at ≤16 mm | Confirmed |
| Supply role | Global steel mill sourcing partner | SHH STEEL |
| Markets | Americas, Europe, Middle East, Africa, Asia | As ordered |
| Certification | EN 10204 3.1 or 3.2 / third-party | As ordered |
This plate sits in pressure vessel steel plates. Cr-Mo comparisons belong on ASME SA387. Molybdenum-only comparisons belong on ASME SA204.
Chemical Composition
Cast analysis follows EN 10028-2 Table 1. Product analysis follows EN 10028-1 when ordered. Google queries such as 13CrMo4-5 chemical composition and 1.7335 chemistry should be answered from this table.
Cast Analysis and Product Analysis — EN 10028-2 13CrMo4-5 (1.7335)
| Element | Cast Analysis (%) | Product Analysis, when ordered (%) |
|---|---|---|
| Carbon (C) | 0.08 – 0.18 | 0.06 – 0.20 |
| Silicon (Si), max | 0.35 | 0.40 |
| Manganese (Mn) | 0.40 – 1.00 | 0.35 – 1.08 |
| Phosphorus (P), max | 0.025 | 0.030 |
| Sulfur (S), max | 0.010 | 0.013 |
| Nitrogen (N), max | 0.012 | 0.014 |
| Chromium (Cr) | 0.70 – 1.15 | 0.65 – 1.20 |
| Copper (Cu), max | 0.30 | 0.35 |
| Molybdenum (Mo) | 0.40 – 0.65 | 0.38 – 0.70 |
| Nickel (Ni), max | 0.30 | 0.35 |
| Vanadium (V), max | 0.02 | 0.03 |
Chromium plus molybdenum is the alloy pair that makes 13CrMo4-5 different from P355GH and 16Mo3. It is not 2.25Cr-1Mo and not 9Cr-1Mo-V. SHH STEEL reports cast analysis on every certificate and product analysis when ordered. Density is 7.85 g/cm³.
Mechanical Properties
Buyers search 13CrMo4-5 mechanical properties, 13CrMo4-5 yield strength and 1.7335 tensile. Room-temperature values fall with thickness.
Tensile and Yield — EN 10028-2 13CrMo4-5
| Thickness (mm) | Yield min (MPa) | Tensile (MPa) |
|---|---|---|
| ≤ 16 | 300 | 450 – 600 |
| 16 – 40 | 290 | 450 – 600 |
| 40 – 60 | 280 | 440 – 590 |
| 60 – 100 | 260 | 430 – 580 |
| Density | 7.85 g/cm³ | 7.85 g/cm³ |
Elongation is typically 20% min on thinner plate. Impact at 0 °C, 27 J, is the usual option when the order names it. Elevated-temperature proof strength is part of EN 10028-2. Ask for that table when the vessel calculation uses design temperature.
Do not quote 300 MPa yield on a 80 mm plate. Do not treat 450–600 MPa tensile as permission to stamp SA387 Grade 12 Class 2 without checking class, PWHT and impact.
Material Comparison
| Grade | Book | What buyers search | Swap? |
|---|---|---|---|
| EN 10028-2 16Mo3 | EN 10028-2 | 16Mo3 steel plate | No |
| EN 10028-2 13CrMo4-5 | EN 10028-2 | 13CrMo4-5 steel plate | This page |
| EN 10028-2 10CrMo9-10 | EN 10028-2 | 10CrMo9-10 | No |
| SA387 Grade 12 Class 1 | SA-387 | SA387 Gr.12 Cl.1 | No auto swap |
| SA387 Grade 12 Class 2 | SA-387 | SA387 Gr.12 Cl.2 | No auto swap |
| SA387 Grade 11 Class 2 | SA-387 | SA387 Gr.11 Cl.2 | No |
| 15CrMoR steel plate | GB/T 713.2 | 15CrMoR | No auto swap |
| 14Cr1MoR steel plate | GB/T 713.2 | 14Cr1MoR | No |
| Q345R steel plate | GB/T 713.2 | Q345R | No |
Equivalent Material Grades
Search habits mix 13CrMo4-5 equivalent, 1.7335 equivalent and 13CrMo4-5 vs SA387 Grade 12. Those names help a buyer find the right page. They do not authorize substitution.
| Designation | Standard / region | Notes |
|---|---|---|
| EN 10028-2 13CrMo4-5 / 1.7335 | EN 10028-2 | Name on this page |
| 13CrMo44 | Old DIN | Historical name |
| SA387 Grade 12 Class 1 | SA-387 | Closest ASME Class 1 |
| SA387 Grade 12 Class 2 | SA-387 | Higher strength class |
| 15CrMoR steel plate | GB/T 713.2 | Chinese 1Cr-0.5Mo |
| SA204 Grade B | SA-204 | Mo only, no 1% Cr |
| SA387 Grade 22 Class 2 | SA-387 | 2.25Cr-1Mo |
| 12Cr2Mo1R steel plate | GB/T 713.2 | Chinese 2.25Cr-1Mo |
| SA516 Grade 70 | SA-516 | Carbon, no Cr-Mo |
1.25Cr-0.5Mo Pressure-Vessel Service
Buyers pick 13CrMo4-5 for PED boilers, steam piping-adjacent shells, heat-exchanger channels and high-temperature vessels that need 1.25Cr-0.5Mo, not carbon and not 2.25Cr-1Mo. Search phrases such as 13CrMo4-5 boiler plate, 1.7335 steel plate and 13CrMo4-5 pressure vessel plate all point to this grade.
Do not ship SA387 Grade 22 Class 1 against 13CrMo4-5. That grade is 2.25Cr-1Mo. Do not ship SA387 Grade 5 Class 2 either. An ASME file that wants 1.25Cr-0.5Mo should name SA-387 Grade 12 on ASME SA387 and then write class and extras. Dual marking is possible only when both books are met.
SHH STEEL supplies this plate to fabricators in the United States, Mexico, South America, Europe, the Middle East, Africa and Asia.
Weldability
13CrMo4-5 is 1.25Cr-0.5Mo vessel plate. Treat welding as production welding, and as PED / ASME Code welding when the equipment is a vessel.
Qualify to the applicable code. ASME dual-name work uses ASME Section IX. Consumables must match 1.25Cr-0.5Mo practice. A carbon procedure written for SA516 Grade 70 is not valid. A 0.3Mo procedure written for 16Mo3 is the previous family, not this one. A 2.25Cr-1Mo procedure written for SA387 Grade 22 Class 2 is the next family. Preheat, interpass and PWHT follow 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 and tempered EN 10028-2 13CrMo4-5 (+NT). Buyers who search 13CrMo4-5 NT or 13CrMo4-5 heat treatment are asking for this route.
If the vessel will see PWHT, say so. Test coupons then follow a simulated cycle. Extra simulation, 3.2 hold points or special NDE add time. Plan about two months when those extras are on the order.
The certificate lists EN 10028-2 13CrMo4-5; 1.7335; heat number; cast analysis; product analysis when ordered; tensile to the correct thickness column; +NT; impact when ordered; elevated-temperature values when ordered. Certificates may be EN 10204 3.1 or EN 10204 3.2.
Dimensions
Usual supply range from SHH STEEL for 13CrMo4-5 1.25Cr-0.5Mo vessel plate:
- Thickness: commonly 6 mm – 150 mm, thicker by mill agreement
- Width: 1500 mm – 4000 mm
- Length: 3000 mm – 12000 mm
Higher Cr-Mo belongs on 12Cr1MoVR steel plate or 12Cr2Mo1VR steel plate. Carbon vessel plate belongs on Q345R steel plate.
Tolerances
Dimensional limits follow EN 10028-1 and EN 10029 unless the order names another tolerance table. Do not apply ASTM A36 structural tolerances to a PED vessel plate without writing them.
Supplementary Requirements
Charpy details. Temperature, energy, location and orientation. 0 °C / 27 J is common, not assumed.
Product analysis. Add this when the destination file wants finished-plate chemistry.
Elevated-temperature proof strength. Add this when the calculation uses design temperature.
Simulated PWHT. When the equipment will be stress-relieved.
NDE. EN 10160 or the named UT class.
Third-party. EN 10204 3.2 when written.
Applications
| Industry | Typical components |
|---|---|
| PED boilers | EN 10028-2 13CrMo4-5 shells |
| High-temp heat exchangers | 13CrMo4-5 channels |
| 1.25Cr-0.5Mo vessels | 13CrMo4-5 plate from SHH STEEL |
| Dual-certified export | 13CrMo4-5 / SA387 Grade 12 Class 2 when both books fit |
Global Delivery & Markets
SHH STEEL is a global steel mill sourcing partner with mill partnerships in China. We supply ASTM, ASME, EN, DIN, JIS and GB steel to buyers outside a single region. Origin is mill-direct, China origin.
SHH STEEL has supplied steel plates to the USA, Mexico, Argentina, Peru, El Salvador, Spain, Netherlands, Germany, UAE, Saudi Arabia, South Africa, India, Thailand, Singapore, Vietnam, the Philippines, Japan and Korea.
Typical trade terms on this grade: FOB Shanghai, plus CIF to European, American, Middle East and Asian ports as the buyer names them.
Typical lead time:
- Ex-stock: about 5–7 days
- Mill rolling, standard +NT: about 45 days
- Simulated PWHT, 3.2 or extra NDE: about 2 months
Why Choose SHH STEEL
SHH STEEL is a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin). On EN 10028-2 13CrMo4-5 that means mill pricing, 1.7335 chemistry reported as cast analysis and as product analysis when ordered, recorded +NT, tensile results to the correct thickness column, 3.1 as standard and 3.2 when specified.
We keep the grade on the order. 13CrMo4-5 is not 16Mo3. 13CrMo4-5 is not SA387 Grade 22 Class 2. 13CrMo4-5 is not Q345R steel plate. If the drawing says 10CrMo9-10, we will not ship 13CrMo4-5 and call Cr-Mo close.
Company scope: China steel mill agent SHH STEEL.
FAQ
- What is 13CrMo4-5 steel plate?
- 13CrMo4-5 is an EN 10028-2 1.25Cr-0.5Mo high-temperature pressure-vessel plate, steel number 1.7335. Yield is 300 MPa at ≤16 mm and tensile is 450–600 MPa. Delivery is usually +NT. SHH STEEL supplies this plate as a global steel mill sourcing partner.
- What is the equivalent of 13CrMo4-5?
- Related comparisons are old 13CrMo44, SA-387 Grade 12 and 15CrMoR. Dual marking is possible only when both books are fully met.
- How is 13CrMo4-5 different from 16Mo3?
- 16Mo3 is 0.3Mo with no 1% chromium requirement. 13CrMo4-5 is 1.25Cr-0.5Mo.
- How is 13CrMo4-5 different from 10CrMo9-10?
- 10CrMo9-10 is 2.25Cr-1Mo. 13CrMo4-5 is 1.25Cr-0.5Mo.
Conclusion
EN 10028-2 13CrMo4-5 Steel Plate is European 1.25Cr-0.5Mo high-temperature pressure-vessel plate, steel number 1.7335, at the 300 MPa yield step and 450–600 MPa tensile at ≤16 mm, usually +NT. Whether the inquiry says EN 10028-2 13CrMo4-5, 1.7335 or 13CrMo4-5 1.25Cr-0.5Mo Vessel Plate, SHH STEEL as a global steel mill sourcing partner and steel manufacturer & exporter (mill-direct, China origin) supplies plate with 13CrMo4-5 chemistry, heat and product analysis when ordered, recorded +NT, and EN 10204 3.1 or 3.2 certification.
SHH STEEL supplies EN 10028-2 13CrMo4-5 1.25Cr-0.5Mo Vessel Plate to the USA, Mexico, South America, Europe, the Middle East, Africa and Asia for work that actually names this grade.
Contact SHH STEEL for mill rolling, stock inquiry, +NT, 3.2 inspection or a quotation.
EN 10028-2 13CrMo4-5 Steel Plate, 13CrMo4-5 1.25Cr-0.5Mo vessel plate, 1.7335, 13CrMo4-5 supplier, global steel mill sourcing partner SHH STEEL








