12Cr2Mo1R Steel Plate for Pressure Vessels (GB/T 713)

12Cr2Mo1R 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 with higher chromium content, offering excellent high-temperature strength, creep resistance, and hydrogen corrosion resistance for elevated temperature and high-pressure hydrogen service. It is equivalent to 12CrMo9-10 in the EN standard and SA387 Gr.22 in the ASME standard.

12Cr2Mo1R steel plates are impact tested at 20 ℃ as standard, with minimum absorbed energy of 47 J (average).

12Cr2Mo1R designation explanation: 12 stands for average carbon content (0.12%), Cr denotes Chromium, Mo denotes Molybdenum, R denotes Pressure Vessel Steel.

Yield Strength
>=310 MPa
Tensile Strength
520-680 MPa
Impact (20 C)
>=47 J
Standard
GB/T 713.2-2023

Product Overview

12Cr2Mo1R Steel Plate is a chromium-molybdenum pressure vessel steel manufactured in accordance with GB/T 713.2-2023. It contains higher chromium content (2.00-2.50%) compared to 14Cr1MoR, providing excellent high-temperature strength, creep resistance, and resistance to hydrogen corrosion for severe service conditions.

Compared with 14Cr1MoR, 12Cr2Mo1R offers higher chromium content (2.00-2.50%) and is specifically designed for high-temperature and high-pressure hydrogen service environments, such as hydroprocessing reactors and petrochemical equipment.

Yield 310MPa Cr-Mo Alloyed Hydrogen Service 20 C Impact

Core Advantages

  • Excellent high-temperature strength and creep resistance
  • Superior resistance to hydrogen corrosion
  • 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 12Cr2Mo1R, the American ASME standard SA387 Gr.22, or the European standard 12CrMo9-10, 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 12Cr2Mo1R 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

Hydroprocessing reactors
High-temperature heat exchangers
Hydrocracking equipment
Crude oil distillation equipment
Petrochemical pressure vessels
Hydrogen service equipment


 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

12Cr2Mo1R Chemical Composition (max %)

C Si Mn Cu Ni Cr Mo Nb V Ti P S
0.08-0.15 ≤0.50 0.30-0.60 <=0.20 <=0.30 2.00-2.50 0.90-1.10 - - - <=0.02 <=0.01

12Cr2Mo1R - Alloying Elements and Roles

per GB/T 713.2-2023
C Carbon 0.08-0.15%

Influences strength and hardness.

Si Silicon ≤0.50%

Deoxidizer, increases strength and oxidation resistance.

Mn Manganese 0.30-0.60%

Enhances strength and toughness.

P Phosphorus <=0.02%

Harmful element, reduces toughness. Strictly controlled for hydrogen service.

S Sulfur <=0.01%

Harmful element, causes hot shortness. Strictly controlled for hydrogen service.

Cr Chromium 2.00-2.50%

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

Mo Molybdenum 0.90-1.10%

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

12Cr2Mo1R typical ranges (wt%): C 0.08-0.15, Si ≤0.50, Mn 0.30-0.60, P<=0.02, S<=0.01, Cr 2.00-2.50, Mo 0.90-1.10.

12Cr2Mo1R Mechanical Properties and Impact Test

Thickness (mm) YS (MPa) TS (MPa) Elong (%) Impact 20 ℃ (J)
6-200 >=310 520-680 19 >=47

12Cr2Mo1R High-Temperature Mechanical Properties (Rp0.2 or RcL, MPa)

Thickness (mm) 100℃ 150℃ 200 ℃ 250℃ 300 ℃ 350℃ 400℃ 450℃ 500℃
>20-200 280 270 260 255 250 245 240 230 215

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

12Cr2Mo1R vs SA387 Gr.22 vs 12CrMo9-10

Item 12Cr2Mo1R SA387 Gr.22 12CrMo9-10
Standard GB/T 713.2 ASME SA387 EN 10028-2
Cr Content 2.00-2.50% 2.00-2.50% 2.00-2.50%
Mo Content 0.90-1.10% 0.90-1.10% 0.90-1.10%
Yield Strength >=310 MPa >=310 MPa >=310 MPa
Impact mandatory Yes (0 C) Project dependent Yes (0 C)

Scenario-Based Recommendation - GB Grade Comparison

15CrMoR

High-temp reactors, hydroprocessing
Yield >=295 MPa - Cr 0.80-1.20%
Charpy 0 C
Standard Cr-Mo grade
15CrMoR details

14Cr1MoR

High-temp, severe service
Yield >=310 MPa - Cr 1.00-1.50%
Charpy 0 C
Higher Cr content
14Cr1MoR details

12Cr2Mo1R

Hydroprocessing, hydrogen service
Yield >=310 MPa - Cr 2.00-2.50%
Charpy 0 C (47 J)
Highest Cr content for H2 service
[Current Grade]

12Cr2Mo1VR

Ultra-high strength hydrogen service
Yield >=415 MPa - Cr 2.00-2.50%
Charpy -20 C
Higher strength with V addition
12Cr2Mo1VR details
Quick selection path: 15CrMoR -> 14Cr1MoR -> 12Cr2Mo1R (higher Cr, H2 service) -> 12Cr2Mo1VR (higher strength)

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 12Cr2Mo1R

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 12Cr2Mo1R steel plate used for?

12Cr2Mo1R steel plate is mainly used for hydroprocessing reactors, hydrocracking equipment, high-temperature heat exchangers, and pressure vessels in high-temperature and high-pressure hydrogen service environments.

What is the impact test temperature for 12Cr2Mo1R?

12Cr2Mo1R steel plates are impact tested at 0 C as standard, with minimum average absorbed energy of 47 J (Charpy V-notch).

What is the difference between 14Cr1MoR and 12Cr2Mo1R?

12Cr2Mo1R has higher chromium content (2.00-2.50%) compared to 14Cr1MoR (1.00-1.50%), providing superior resistance to hydrogen corrosion and better high-temperature creep resistance for severe hydrogen service environments.

What is the delivery condition for 12Cr2Mo1R?

12Cr2Mo1R is typically delivered in normalized + tempered (N+T) condition with a tempering temperature not lower than 680 C.

Can you provide 12Cr2Mo1R 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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