Q245R Steel Plate for Pressure Vessels (GB/T 713.2-2023)

Q245R is a grade designation for pressure vessel steel plate 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 equivalent to SA516GR60 in the ASME standard and A516GR60 in the ASTM standard.

Q245R steel plates typically undergo impact testing at 0°C, but custom impact testing at -20°C is also available upon request.

Q245R designation explanation: Q stands for Yield Strength, 245 represents 245 MPa, R denotes Pressure Vessel Steel.

Yield Strength

≥245 MPa

Tensile Strength

400–520 MPa

Impact (0°C)

≥34 J

Standard

GB/T 713.2-2023

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Product Overview

Q245R Steel Plate is a carbon–manganese pressure vessel steel manufactured in accordance with GB/T 713.2. It is specifically designed for boilers, pressure vessels, and pressure-retaining equipment where material reliability, weldability, and operational safety are critical.

Compared with ordinary structural steel, Q245R offers more stable mechanical properties, controlled chemical composition, and improved weldability, reducing the risk of brittle fracture under specified service conditions.

Yield 245MPa Fine-grain Weldable Impact tested

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Core Advantages

Professional technical support (GB/ASME/EN)
Zero communication errors at order stage
Customizable: HIC/SSC, high-temp properties
Simulated PWHT
Fast delivery: 15 days hot-rolled / 30 days normalized

Professional Technical Support & Customization

Comprehensive Knowledge Base: Our sales team is proficient in mainstream domestic and international pressure vessel standards. Whether it's the Chinese national standard Q245R, the American ASME standard SA516GR60, or the European standard P265GH, 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 Q245R 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 250mm

📋 Applications

Boilers & boiler drums

Pressure vessels & reactors

Heat exchangers & condensers

LPG storage tanks

Industrial gas storage

Pressure shells & heads

📦 Stock Resources

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

Normalized plates: 12–120mm (W:2000–2500, L:11000–12500)

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

Click to check Q245R inventory

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)
12–120	2000/2200/2500	11000–12500

Hot-Rolled Coils

Thickness (mm)	Width (mm)
5–16	1500/1800/2000

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

Q245R Chemical Composition (max %)

C	Si	Mn	Cu	Ni	Cr	Mo	Nb	V	Ti	P	S
≤0.20	≤0.35	0.50–1.10	≤0.30	≤0.30	≤0.30	≤0.08	≤0.050	≤0.050	≤0.030	≤0.025	≤0.010

Q245R · alloying elements & roles

per GB/T 713.2

C Carbon ≤0.20%

Influences strength and hardness.

Si Silicon ≤0.35%

Increases strength, deoxidizer.

Mn Manganese 0.50–1.10%

Enhances strength and toughness, desulfurizer.

P Phosphorus ≤0.025%

Harmful element, reduces toughness.

S Sulfur ≤0.010%

Harmful element, causes hot shortness.

Cu Copper ≤0.30%

Improves corrosion resistance.

Cr Chromium ≤0.30%

Improves corrosion resistance and hardness.

Ni Nickel ≤0.30%

Enhances toughness and low-temperature properties.

Nb Niobium ≤0.050%

Refines grain structure, improves strength.

V Vanadium ≤0.050%

Refines grain structure, improves toughness.

Ti Titanium ≤0.030%

Refines grain, fixes carbon and nitrogen.

Mo Molybdenum ≤0.08%

Improves high-temperature strength and corrosion resistance.

Al Aluminum ≥0.015%

Deoxidizer, refines grain structure.

N Nitrogen controlled by process

Controlled by production process; affects aging and grain refinement.

Q245R typical ranges (wt%): C ≤0.20, Si ≤0.35, Mn 0.50–1.10, P≤0.025, S≤0.010, Cu≤0.30, Cr≤0.30, Ni≤0.30, Mo≤0.08, Al≥0.015. Residual elements: Cu+Ni+Cr+Mo ≤0.70. Nb+V+Ti ≤0.050 (when added).

Q245R Mechanical Properties & Impact Test

Thickness (mm)	YS (MPa)	TS (MPa)	Elong (%)	Impact 0°C (J)
3–16	≥245	400–520	25	≥34
>16–36	≥235	400–520	25	≥34
>36–60	≥225	390–510	25	≥34
>60–100	≥205	390–510	25	≥34
>100–150	≥185	380–500	25	≥34

Q245R vs SA516Gr60 vs P265GH

Item	Q245R	SA516Gr60	P265GH
Standard	GB/T 713.2	ASTM A516	EN 10028-2
Impact mandatory	Yes (0°C, ≥34J)	Project dependent	Yes (0°C, ≥40J)
Specified temp	0°C	Not specified	0°C
Avg. impact energy	≥34 J	Project specified	≥40 J
Min single value	≥27 J	Project specified	≥27 J

Scenario-Based Recommendation · GB Grade Comparison

Q245R

Low‑pressure vessels, boilers, economical choice

Yield ≥245 MPa · Tensile 400-520 MPa
Charpy: 0°C ( -20°C optional )

vs Q345R: lower strength, cost‑effective for low‑stress designs

Current Grade

Q345R

Higher strength, standard pressure vessels

Yield ≥345 MPa · Tensile 510-640 MPa
Charpy 0°C

vs Q245R: 100 MPa higher yield, allows weight reduction

Q345R details

Q370R

High‑pressure vessels, lightweight design

Yield ≥370 MPa · Tensile 530-630 MPa
Charpy -20°C

vs Q245R: significantly higher strength, low‑temp toughness

Q370R details

16MnDR

Cryogenic tanks, cold regions, LPG

Yield ≥315 MPa · Tensile 490-620 MPa
Charpy -40°C guaranteed

vs Q245R: Q245R usually not certified for -40°C, 16MnDR is purpose‑built

16MnDR details

09MnNiDR

Ethylene, chemical, extreme‑cold equipment

Yield ≥280 MPa · Tensile 430-570 MPa
Charpy -70°C (Ni alloyed)

vs 16MnDR: 16MnDR stops at -40°C, 09MnNiDR reaches -70°C

09MnNiDR details

Quick selection path: Q245R (economy) → strength increases → Q345R (standard) → Q370R (higher strength) ; Low‑temp branch: 16MnDR (-40°C) → 09MnNiDR (-70°C)

Quality Control & Inspection

Mill Test Certificate 3.1 Chemical analysis Mechanical testing Charpy V-notch UT optional Third-party inspection

📐 Customizable Specification Range for Q245R

Thickness

6–250 mm

(custom rolling)

Width

1500–5200 mm

(adjustable per order)

Length

≤ 18000 mm

(max. single length)

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Delivery Condition

AR CR TMCP N+T N

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

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Additional Requirements

Simulated post‑weld heat treatment (PWHT)
Brinell hardness requirements (specify range)
HIC / SSC testing on request
High‑temperature tensile properties

📋 Other customized technical conditions (impact temperature, UT grade, etc.) are also negotiable.

✅ The above ranges represent our standard customizing capability — dimensions, delivery conditions, and supplementary tests can be further adjusted to meet your project specifications.

Frequently Asked Questions

What is Q245R steel plate used for?

Q245R steel plate is mainly used for boilers, pressure vessels, heat exchangers, reactors, and other pressure-retaining equipment manufactured according to GB/T 713.2.

Is Q245R equivalent to SA516 Grade 60?

Q245R is not officially equivalent to SA516 Grade 60. Substitution requires design approval and compliance with applicable pressure vessel codes.

Can Q245R be used for low-temperature applications?

Q245R is suitable for normal to moderate low-temperature service (minimum use temperature -20°C per standard). For cryogenic applications, steels such as 16MnDR or 09MnNiDR are recommended.

Does Q245R steel plate require impact testing?

Yes. Impact testing is a mandatory requirement under GB/T 713.2 for Q245R pressure vessel steel plates.

Can you provide Q245R steel plates with custom sizes?

Yes. Custom rolling up to 250mm thick, 5200mm wide, 18000mm long. Delivery: 10-15 days hot-rolled, 30-35 days normalized.

Request a Quote

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