14Cr1MoR Steel Plate for Pressure Vessels (GB/T 713)

14Cr1MoR 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 13CrMoSi5-5 in the EN standard and SA387 Gr.11 in the ASME standard.

14Cr1MoR steel plates are impact tested at 0 ℃ as standard, with minimum absorbed energy of 47 J (average).

14Cr1MoR designation explanation: 14 stands for average carbon content (0.14%), Cr denotes Chromium, Mo denotes Molybdenum, R denotes Pressure Vessel Steel.

Yield Strength
>=300 MPa
Tensile Strength
510-680 MPa
Impact (0 C)
>=47 J
Standard
GB/T 713.2-2023

Product Overview

14Cr1MoR Steel Plate is a chromium-molybdenum pressure vessel steel manufactured in accordance with GB/T 713.2-2023. It contains higher chromium content compared to 15CrMoR, providing enhanced high-temperature strength, creep resistance, and corrosion resistance for elevated temperature service.

Compared with 15CrMoR, 14Cr1MoR offers higher chromium content (1.00-1.50%) and molybdenum content (0.45-0.65%), delivering superior high-temperature mechanical properties and oxidation resistance for demanding service conditions.

Yield 310MPa Cr-Mo Alloyed High-Temp Resistant 0 C Impact

Core Advantages

  • Enhanced high-temperature strength and creep resistance
  • Excellent 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 14Cr1MoR, the American ASME standard SA387 Gr.11, or the European standard 13CrMoSi5-5, 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 14Cr1MoR 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
Hydroprocessing vessels
Heat exchangers
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

14Cr1MoR Chemical Composition (max %)

C Si Mn Cu Ni Cr Mo Nb V Ti P S
<=0.17 0.50-0.80 0.40-0.65 <=0.30 <=0.30 1.15-1.50 0.45-0.65 - - - <=0.020 <=0.010

14Cr1MoR - Alloying Elements and Roles

per GB/T 713.2-2023
C Carbon <=0.17%

Influences strength and hardness.

Si Silicon 0.50-0.80%

Deoxidizer, increases strength and oxidation resistance.

Mn Manganese 0.40-0.65%

Enhances strength and toughness.

P Phosphorus <=0.020%

Harmful element, reduces toughness.

S Sulfur <=0.010%

Harmful element, causes hot shortness.

Cr Chromium 1.15-1.50%

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.

14Cr1MoR typical ranges (wt%): C <=0.17, Si 0.50-0.80, Mn 0.40-0.65, P<=0.020, S<=0.010, Cr 1.15-1.50, Mo 0.45-0.65.

14Cr1MoR Mechanical Properties and Impact Test

Thickness (mm) YS (MPa) TS (MPa) Elong (%) Impact 20 ℃ (J)
6-100 >=310 520-680 19 >=47
>100-200 >=300 510-670 19 >=47

14Cr1MoR High-Temperature Mechanical Properties (Rp0.2 or RcL, MPa)

Thickness (mm) 100 ℃ 150 ℃ 200 ℃ 250 ℃ 300 ℃ 350 ℃ 400 ℃ 450 ℃ 500 ℃
>20-200 280 270 255 245 230 220 210 195 176

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

14Cr1MoR vs 15CrMoR vs SA387 Gr.11 vs 13CrMoSi5-5

Item 14Cr1MoR 15CrMoR SA387 Gr.11 13CrMoSi5-5
Standard GB/T 713.2 GB/T 713.2 ASME SA387 EN 10028-2
Cr Content 1.15-1.50% 0.80-1.20% 1.00-1.50% 1.00-1.50%
Mo Content 0.45-0.65% 0.45-0.65% 0.45-0.65% 0.40-0.60%
Yield Strength >=310 MPa >=295 MPa >=255 MPa >=310 MPa
Impact mandatory Yes (0 C) Yes (0 C) Project dependent Yes (0 C)

Scenario-Based Recommendation - GB Grade Comparison

15CrMoR

High-temp reactors, hydroprocessing vessels
Yield >=295 MPa - Tensile 450-590 MPa
Cr-Mo alloyed for high-temp
Standard Cr-Mo grade
15CrMoR details

14Cr1MoR

High-temperature equipment, severe service
Yield >=300 MPa - Tensile 510-680 MPa
Cr-Mo alloyed, higher Cr content
Higher Cr content than 15CrMoR (1.00-1.50%)
[Current Grade]

12Cr2Mo1R

High-temp, high-pressure, hydrogen service
Yield >=310 MPa - Tensile 520-680 MPa
Higher Cr-Mo content
Higher Cr (2.00-2.50%) for severe service
12Cr2Mo1R details

13MnNiMoR

Heavy-wall vessels, petrochemical equipment
Yield >=295 MPa - Tensile 450-590 MPa
Ni-Mo alloyed for toughness
Excellent toughness and weldability
13MnNiMoR details

16MnDR

Cryogenic tanks, cold regions
Yield >=315 MPa - Tensile 490-620 MPa
Charpy -40 C
Low-temperature application
16MnDR details
Quick selection path: 15CrMoR (standard) -> 14Cr1MoR (higher Cr) -> 12Cr2Mo1R (higher 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 14Cr1MoR

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 14Cr1MoR steel plate used for?

14Cr1MoR steel plate is mainly used for high-temperature reactors, hydroprocessing vessels, heat exchangers, crude oil distillation equipment, and petrochemical pressure vessels requiring excellent high-temperature strength and creep resistance.

What is the impact test temperature for 14Cr1MoR?

14Cr1MoR 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 15CrMoR and 14Cr1MoR?

14Cr1MoR has higher chromium content (1.00-1.50%) compared to 15CrMoR (0.80-1.20%), providing enhanced high-temperature strength, oxidation resistance, and corrosion resistance for more demanding service conditions.

What is the delivery condition for 14Cr1MoR?

14Cr1MoR is typically delivered in normalized + tempered (N+T) condition with a tempering temperature not lower than 650 C.

Can you provide 14Cr1MoR 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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