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Help CenterSteel Sheet & Plate & Boiler Steel Plate，Q245R、Q345R、15CrMoR、13MnNiMoR
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Steel Sheet & Plate & Boiler Steel Plate，Q245R、Q345R、15CrMoR、13MnNiMoRNegotiableMOQ: 5 Metric Tons -
Steel Sheet & Plate & Boiler Steel Plate，Q245R、Q345R、15CrMoR、13MnNiMoRNegotiableMOQ: 5 Metric Tons
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Steel Sheet & Plate & Boiler Steel Plate，Q245R、Q345R、15CrMoR、13MnNiMoRNegotiableMOQ: 5 Metric Tons
-
Steel Sheet & Plate & Boiler Steel Plate，Q245R、Q345R、15CrMoR、13MnNiMoRNegotiableMOQ: 5 Metric Tons
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Steel Sheet & Plate & Boiler Steel Plate，Q245R、Q345R、15CrMoR、13MnNiMoRNegotiableMOQ: 5 Metric Tons
Boiler Plate Product Description
Boiler plate is a special medium and heavy steel plate used for pressure-bearing components of boilers, pressure vessels and pressure equipment. It operates continuously under high temperature, high pressure and alternating loads, featuring excellent high-temperature strength, creep resistance, weldability, low-temperature toughness, corrosion resistance and oxidation resistance.
1. Applicable Standards
National Standard: GB/T 713-2023 (replaces GB 713-2014), thickness range: 3–250 mm
International Standards: ASTM A516/A517, ASME SA-516, EN 10028, etc.
2. Common Grades & Chemical Compositions (GB/T 713)
Carbon Steel
Q245R: C ≤ 0.20, Mn 0.50–1.00; Applicable temperature ≤ 450℃, for medium and low-pressure boilers and steam drums.
Q345R: C ≤ 0.20, Mn 1.20–1.60; Applicable temperature: -20℃ ~ 475℃, for medium and high-pressure vessels and heat exchangers.
Low-alloy Heat-resistant Steel
15CrMoR: Cr 0.80–1.20, Mo 0.25–0.35; Applicable temperature ≤ 550℃, for superheaters and main steam pipelines.
12Cr2Mo1R: Cr 2.00–2.50, Mo 0.90–1.10; Applicable temperature ≤ 580℃, for high-pressure boilers and reactors.
Low-temperature High-strength Steel
13MnNiMoR: Mn 1.20–1.60, Ni 0.60–1.00; Applicable temperature: -40℃ ~ 400℃, for thick-wall high-pressure vessels.
3. Dimensions & Specifications
Thickness: 6–200 mm (Regular sizes: 8/10/12/16/20/25/30/50/80/100 mm)
Width: 1500–3800 mm
Length: 6000–12000 mm, custom lengths available
Dimension Tolerance: Class B (Class C optional) in accordance with GB/T 709
Non-destructive Testing: Grade I / II / III (UT/MT/PT)
4. Mechanical Properties (Typical Values)
| Grade | Yield Strength ReL (MPa) | Tensile Strength Rm (MPa) | Impact Energy Akv (J, -20℃) |
|---|---|---|---|
| Q245R | ≥245 | 400–520 | ≥34 |
| Q345R | ≥345 | 510–640 | ≥34 |
| 15CrMoR | ≥295 | 440–640 | ≥34 |
| 13MnNiMoR | ≥390 | 570–740 | ≥41 |
5. Production Process & Heat Treatment
Smelting: Electric furnace with LF/VD refining; low sulfur (S ≤ 0.015%) and low phosphorus (P ≤ 0.025%).
Rolling: Hot rolling / controlled rolling. Normalizing at 900–950℃, or normalizing plus tempering to refine grain structure and stabilize material properties.
Surface Treatment: Sand blasting and derusting with anti-rust paint coated. 100% ultrasonic testing for each plate.
6. Key Characteristics
High-temperature Strength: Maintains stable strength at 350–550℃, with outstanding creep resistance and rupture resistance.
Excellent Weldability: Low carbon equivalent and low cold cracking sensitivity, suitable for arc welding and submerged arc welding.
Superior Low-temperature Toughness: High impact energy at -20℃ (-40℃ optional) to prevent brittle fracture.
Corrosion & Oxidation Resistance: Resists corrosion by water vapor and flue gas, and prevents surface oxidation and peeling under high temperature.
7. Application Scope
Power Industry: Steam drums, superheaters, headers and main steam pipelines of utility boilers.
Chemical Industry: Reactors, heat exchangers, storage tanks and towers working under medium/high temperature and pressure.
Industrial Boilers: Pressure-bearing parts of steam boilers and hot water boilers (operating temperature ≤ 450℃).
Nuclear Power & Pressure Vessels: Containment structures, high-pressure storage tanks and thick-wall pressure components.
8. Packaging, Marking & Delivery
Packaging: Bundled (2–5 tons per bundle) with wooden supports to avoid deformation.
Marking: Steel stamping or spray marking including grade, dimension, heat number, batch number and execution standard.
Delivery Condition: Delivered in normalized state. Complete mill test certificate covering chemical composition, mechanical properties, NDT reports and heat treatment records is provided.
9. Selection Recommendations
Medium & low pressure (≤4MPa, ≤450℃): Q245R / Q345R are preferred for cost performance.
High pressure & high temperature (≥10MPa, 450–550℃): Select 15CrMoR / 12Cr2Mo1R.
Thick wall & low temperature (-20℃ ~ -40℃): Select 13MnNiMoR / 16MnDR.
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