15CrMoR Steel Plate for Pressure Vessels (GB/T 713)

15CrMoR is a chromium-molybdenum pressure vessel steel plate grade under the Chinese national standard. The manufacturing specification is GB/T 713.2-2023 (previous version: GB/T 713-2014), and the ultrasonic testing standard is NB/T 47013.3-2015.

This grade is a chromium-molybdenum alloy steel offering excellent high-temperature strength, creep resistance, and corrosion resistance for elevated temperature service. It is equivalent to 13CrMo4-5 in the EN standard and SA387 Gr.12 in the ASME standard.

15CrMoR steel plates are impact tested at 20 ℃ as standard, with minimum absorbed energy of 47 J (average) for thickness 6-60mm and 47 J for thickness >60-100mm.

15CrMoR designation explanation: 15 stands for average carbon content (0.15%), Cr denotes Chromium, Mo denotes Molybdenum, R denotes Pressure Vessel Steel.

Yield Strength
>=275 MPa
Tensile Strength
450-590 MPa
Impact (20 ℃)
>=47 J
Standard
GB/T 713.2-2023

Product Overview

15CrMoR Steel Plate is a chromium-molybdenum pressure vessel steel manufactured in accordance with GB/T 713.2-2023. It contains chromium and molybdenum as alloying elements, providing excellent high-temperature strength, creep resistance, and corrosion resistance for elevated temperature service.

Compared with carbon steel grades like Q345R, 15CrMoR offers superior high-temperature mechanical properties and oxidation resistance due to the addition of chromium and molybdenum, making it ideal for high-temperature pressure vessel applications.

Yield 295MPa Cr-Mo Alloyed High-Temp Resistant 0 C Impact

Core Advantages

  • Excellent high-temperature strength and creep resistance
  • Good oxidation and corrosion resistance
  • Customizable: HIC/SSC, high-temp properties
  • Normalized + tempered (N+T) delivery condition

Professional Technical Support and Customization

Comprehensive Knowledge Base: Our sales team is proficient in mainstream domestic and international pressure vessel standards. Whether it's the Chinese national standard 15CrMoR, the American ASME standard SA387 Gr.12, or the European standard 13CrMo4-5, we can provide accurate technical communication.

Zero Communication Errors: With solid product knowledge, we can avoid all basic errors during the order technical condition confirmation stage, ensuring the accuracy of your order.

Flexible Customization Capabilities: The 15CrMoR standard does not have mandatory requirements for hardness and high-temperature performance. If your design has special requirements (e.g., specific hardness, high-temperature mechanical properties, simulated post-weld heat treatment, HIC/SSC testing), we support customized production.

Hot-rolled ~15 days
Normalized ~30 days
Max thickness 200mm


 Applications

High-temperature reactors
Heat exchangers
Hydroprocessing vessels
Crude oil distillation equipment
Petrochemical pressure vessels
Boiler drums and superheaters


 Stock Resources

Normalized plates: 6-200mm (W:2000-2500, L:11000-12500)

Hot-rolled plates: 6-36mm (W:1800-2500, L:11000-12500)

Hot-rolled coils: 5-16mm (W:1500-2000)

Spot stock size range and supply conditions

Hot Rolled (AR)
Thickness (mm) Width (mm) Length (mm)
6-36 1800/2000/2200/2500 11000-12500
Normalized (N/N+T)
Thickness (mm) Width (mm) Length (mm)
6-200 2000/2200/2500 11000-12500
Hot-Rolled Coils
Thickness (mm) Width (mm)
5-16 1500/1800/2000

Supply Condition: CR, AR, N, N+T

15CrMoR Chemical Composition (max %)

C Si Mn Cu Ni Cr Mo Nb V Ti P S
0.08-0.18 0.15-0.40 0.40-0.70 <=0.30 <=0.30 0.80-1.20 0.45-0.65 - - - <=0.025 <=0.010

15CrMoR - Alloying Elements and Roles

per GB/T 713.2-2023
C Carbon 0.08-0.18%

Influences strength and hardness.

Si Silicon 0.15-0.40%

Deoxidizer, increases strength.

Mn Manganese 0.40-0.70%

Enhances strength and toughness.

P Phosphorus <=0.025%

Harmful element, reduces toughness.

S Sulfur <=0.010%

Harmful element, causes hot shortness.

Cr Chromium 0.80-1.20%

Improves corrosion resistance, oxidation resistance, and high-temperature strength.

Mo Molybdenum 0.45-0.65%

Improves high-temperature strength, creep resistance, and corrosion resistance.

Cu+Ni+Cr+Mo Residual Total <=0.70%

As residual elements, Cu and Ni each <=0.30%, Cr and Mo as alloying elements.

15CrMoR typical ranges (wt%): C 0.08-0.18, Si 0.15-0.40, Mn 0.40-0.70, P<=0.025, S<=0.010, Cr 0.80-1.20, Mo 0.45-0.65.

15CrMoR Mechanical Properties and Impact Test

Thickness (mm) YS (MPa) TS (MPa) Elong (%) Impact 20℃  (J)
6-60 >=295 450-590 19 >=47
>60-100 >=275 450-590 19 >=47
>100-200 >=255 440-580 19 >=47

15CrMoR High-Temperature Mechanical Properties (Rp0.2 or RcL, MPa)

Thickness (mm) 100 ℃ 150 ℃ 200 ℃ 250 ℃ 300 ℃ 350 ℃ 400 ℃ 450 ℃ 500 ℃
>20-60 270 255 240 225 210 200 189 179 174
>60-100 250 235 220 210 196 186 176 167 162
>100-200 235 220 210 199 185 175 165 156 150

Note: High-temperature tensile properties available upon request. Values based on GB/T 713.2-2023 Table 3.

15CrMoR vs SA387 Gr.12 vs 13CrMo4-5

Item 15CrMoR SA387 Gr.12 13CrMo4-5
Standard GB/T 713.2 ASME SA387 EN 10028-2
Cr Content 0.80-1.20% 0.80-1.15% 0.70-1.15%
Mo Content 0.45-0.65% 0.45-0.65% 0.40-0.60%
Yield Strength >=295 MPa >=255 MPa >=295 MPa
Impact mandatory Yes (0 C) Project dependent Yes (0 C)

Scenario-Based Recommendation - GB Grade Comparison

Q345R

General pressure vessels, boilers
Yield >=345 MPa - Tensile 510-640 MPa
Charpy: 0 C
Standard grade, cost-effective
Q345R details

18MnMoNbR

Heavy-wall reactors, high-temp service
Yield >=400 MPa - Tensile 570-720 MPa
Charpy 0 C
Mo-Nb alloyed for high-temp performance
18MnMoNbR details

13MnNiMoR

Heavy-wall vessels, petrochemical equipment
Yield >=295 MPa - Tensile 450-590 MPa
Charpy 0 C
Ni-Mo alloyed for high toughness
13MnNiMoR details

15CrMoR

High-temp reactors, hydroprocessing vessels
Yield >=295 MPa - Tensile 450-590 MPa
Cr-Mo alloyed for high-temp
Excellent creep resistance & oxidation resistance
[Current Grade]

16MnDR

Cryogenic tanks, cold regions
Yield >=315 MPa - Tensile 490-620 MPa
Charpy -40 C
Low-temperature application
16MnDR details
Quick selection path: Q345R (standard) -> 18MnMoNbR (high strength) -> 13MnNiMoR (high toughness) -> 15CrMoR (high-temp Cr-Mo) ; Low-temp branch: 16MnDR (-40 C)

Quality Control and Inspection

Mill Test Certificate 3.1 Chemical analysis Mechanical testing Charpy V-notch 0 C High-temp tensile UT optional

Customizable Specification Range for 15CrMoR

Thickness
6-200 mm
(custom rolling)
Width
1500-5200 mm
(adjustable per order)
Length
<= 18000 mm
(max. single length)

Delivery Condition

AR CR TMCP N+T N

AR as rolled - CR controlled rolled - TMCP thermo-mechanical - N+T normalized + tempered - N normalized

Additional Requirements

  • Simulated post-weld heat treatment (PWHT)
  • Brinell hardness requirements
  • HIC / SSC testing
  • High-temperature tensile properties

Other customized technical conditions are also negotiable.

The above ranges represent our standard customizing capability.

Frequently Asked Questions

What is 15CrMoR steel plate used for?

15CrMoR steel plate is mainly used for high-temperature reactors, heat exchangers, hydroprocessing vessels, crude oil distillation equipment, and petrochemical pressure vessels operating at elevated temperatures.

What is the impact test temperature for 15CrMoR?

15CrMoR steel plates are impact tested at 0 C as standard, with minimum average absorbed energy of 41 J (6-60mm) and 47 J (>60-200mm).

What is the equivalent of 15CrMoR in other standards?

15CrMoR is equivalent to 13CrMo4-5 in the EN standard (EN 10028-2) and SA387 Gr.12 in the ASME standard (ASME II-A).

What is the delivery condition for 15CrMoR?

15CrMoR is typically delivered in normalized + tempered (N+T) condition with a tempering temperature not lower than 650 C.

Can you provide 15CrMoR steel plates with custom sizes?

Yes. Custom rolling up to 200mm thick, 5200mm wide, 18000mm long. Delivery: 15-20 days hot-rolled, 30-35 days normalized.

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Emails go directly to customize@cehesteel.com - reply within 12h.

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