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Help CenterSteel Sheet & Plate & Boiler Steel Plate，Q245R、Q345R、16MnDR、A516 Gr60、A516 Gr70、P265GH、13CrMo44
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1. Product Definition
Boiler Plate, full name Special Steel Plate for Boilers, marked with suffix "R" for pressure equipment grade. It is dedicated to manufacturing boiler drums, headers, heating surfaces, steam tanks, heat exchangers and other high-temperature & high-pressure pressure-bearing components. Strict control of sulfur and phosphorus impurities during smelting; mandatory low-temperature impact test, high-temperature tensile test and 100% ultrasonic non-destructive testing. It features outstanding high-temperature creep resistance, alternating pressure resistance, excellent weldability, hydrogen corrosion resistance and low-temperature anti-brittle fracture performance, serving as core safety material for special pressure equipment.
Domestic Standard: GB/T 713.1~713.3-2023 Steel Plates and Strips for Pressure EquipmentInternational Trade Standards: ASTM A516, ASTM A387, EN 10028
2. Main Grades & Service Conditions
2.1 Carbon Steel Boiler Plate (Medium-Low Temperature & Medium-Low Pressure)
Q245RMinimum yield strength ≥245MPa, service temperature range -20℃ ~ 475℃, delivered hot rolled or normalized. Low impurity content, superior weldability and cost-effective.Application: Civil hot water boilers, small steam boilers, low-pressure heat exchange shells, normal-pressure steam storage tanks.
2.2 Low Alloy High Strength Boiler Plate (Mainstream for Power & Industrial Boilers)
Q345R (Most Widely Used Grade)Yield strength ≥345MPa, qualified for -20℃ impact test, thickness range 6–200mm; HIC resistant grade Q345R(HIC) available.Application: Industrial boiler drums, waste heat boilers, shell & tube heat exchangers, low-pressure headers of power plants, oil & gas buffer storage tanks.
13MnNiMoRHeavy high strength boiler plate, thickness 8–300mm, reliable low & medium temperature toughness, stable long-term service up to 500℃.Application: Large power station steam drums, heavy waste heat boilers, large high-pressure heat exchange equipment.
Q460R / Q460DR460MPa high strength grade; Q460DR suitable for cryogenic service down to -40℃, realize lightweight thin-wall design.Application: High-pressure waste heat boilers, low-temperature waste heat recovery pressure shells.
2.3 Cr-Mo Heat Resistant Alloy Boiler Plate (High Temp & High Pressure Power Station Boilers)
15CrMoRCr-Mo heat-resistant steel, maximum long-term service temperature 550℃, excellent anti-creep and anti-oxidation performance under high temperature.Application: High-temperature waste heat boilers, boiler superheater headers, high-temperature cracking heat exchange equipment.
14Cr1MoR / 12Cr2Mo1RSpecialized for high temperature & high pressure service, anti-hydrogen embrittlement & sulfidation corrosion, stable operation at 580℃.Application: Supercritical power station boilers, coal chemical high-temperature boilers, hydrogenation supporting boiler equipment.
2.4 Low-Temperature Boiler Plate (Low-Temp Waste Heat & Cryogenic Heat Exchange Boilers)
09MnNiDR / 15MnNiDRNickel alloy tempered steel, maintains high impact toughness at -40℃ ~ -70℃ to avoid brittle fracture under ultra-low temperature.Application: Low-temperature waste heat recovery boilers, LNG supporting heat exchange boilers, low-temperature steam separation equipment.
International Equivalent Grades
ASTM: SA516 Gr60/65/70 (carbon steel for ambient temp), A387 Gr11/Gr22 (Cr-Mo heat resistant)EN: P265GH, P355GH, P460NL1
3. Heat Treatment Delivery Status
Hot Rolled / Controlled Rolling (TMCP): Standard for thin plate ≤16mm, uniform grain structure, lower cost; Q345R plates over 36mm thickness require mandatory normalizing.
Normalizing: Standard process for medium & heavy plates, refine grain and greatly improve low-temperature impact toughness.
Normalizing + Tempering: For heavy plates, Cr-Mo heat resistant plates and cryogenic boiler plates, release internal rolling stress and enhance high-temperature creep resistance.
Quenching + Tempering: For ultra-high strength heavy plates and boilers with hydrogen & H2S corrosive medium.
Optional Additional Properties
Z-direction performance Z15/Z25/Z35: Designed for thick plate T-joint welding to prevent lamellar tearing
Ultrasonic Test: Comply with NB/T47013 standard, standard Grade II; Grade I mandatory for power station high-pressure steam drums
Surface Pre-treatment: Shot blasting & anti-rust priming to reduce pre-processing work before welding in boiler factories
4. Complete Specification Parameters
Thickness: 6mm–300mm, regular stock range 8–120mm
Width: 1500/1800/2000/2200/2500–4500mm, customized extra width available
Length: 6000–12000mm, cut-to-length and special shape cutting per customer drawings
Surface Finish: Hot rolled black scale, shot blasting & sandblasting pre-treatment optional
Dimensional Tolerance: Standard Class B tolerance per GB/T709; Class C high precision tolerance available upon request
5. Standard Mechanical Properties (Medium Thickness Reference)
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation | Impact Test Temp | Min Impact Energy |
|---|---|---|---|---|---|
| Q245R | ≥245 | 370–520 | ≥25% | 0℃ | 27J |
| Q345R | ≥345 | 510–640 | ≥21% | -20℃ | 34J |
| 15CrMoR | ≥295 | 440–590 | ≥22% | 20℃ | 34J |
| 09MnNiDR | ≥270 | 440–570 | ≥23% | -70℃ | 34J |
6. Core Product Advantages
Strict clean steel smelting: Ultra-low S & P content than ordinary structural steel, effectively reduce high-temperature welding crack and low-temperature brittle fracture risks
Stable mechanical properties across full temperature range: Mandatory impact test at normal, low and high temperature to eliminate explosion hazard under long-term cold & heat cycles
Superior high-temperature creep resistance: Cr-Mo alloy keeps stable dimension under long-term high temperature & pressure without permanent deformation failure
Excellent forming & weldability: Low carbon equivalent, smooth cold bending, hot rolling and groove processing with wide welding process window for boiler manufacturers
Optional anti-corrosion grades: HIC resistant boiler plates for boilers with hydrogen & hydrogen sulfide corrosive medium
Full non-destructive inspection before delivery: 100% ultrasonic test for all plates, no lamination, inclusion or internal crack defects
Multi-standard compliance: Meet domestic boiler inspection, ASME and EU pressure vessel codes, complete certification documents provided
7. Main Application Fields
Thermal Power Generation BoilersPower station steam drums, superheater & reheater headers, economizer shells, waste heat boiler shells, high-temperature steam pipelines
Industrial & Civil BoilersSteam boilers, hot water boilers, heat conduction oil furnaces, biomass boilers, waste incineration boiler pressure shells
Petrochemical Heat Exchange EquipmentHigh-temperature cracking heat exchangers, hydrogenation supporting boilers, oil & gas waste heat recovery boilers, desulfurization & denitrification heat exchange tanks
Coal Chemical Industry EquipmentCoal-to-hydrogen & coal-to-oil high-pressure boilers, full sets of hydrogen-resistant boiler equipment
Cryogenic Energy Supporting FacilitiesLNG supporting low-temperature heat exchange boilers, CO2 waste heat recovery boilers, refrigeration unit pressure shells
General Heat Exchange Pressure EquipmentAir preheaters, shell & tube heat exchangers, printing & dyeing reaction boilers, pharmaceutical steam heat exchange equipment
8. Export Packing, Lead Time & Delivery Documents
Packing: Plates stacked on wooden supports, fixed with steel straps; heat number, grade, thickness and UT grade marked on surface; waterproof anti-rust film covered for sea transportation.
Lead TimeStandard in-stock boiler plates: 3–5 working daysCustom normalized/tempered, HIC resistant & Z-direction performance special plates: 7–12 working days
Complete Delivery DocumentsMaterial Test Certificate (MTC), Spectral Chemical Composition Report, Mechanical & Impact Test Report, Ultrasonic Test Report, Factory Inspection Certificate, Special Boiler Supervision Inspection Document
9. Key Acceptance Inspection Items
Verify steel grade, thickness, heat treatment delivery status and ultrasonic test grade
Check special test reports including low-temperature impact, high-temperature tensile, Z-direction and HIC resistance test
Visual inspection: No lamination, crack, scar, shell, deep indentation or heavy oxide scale on plate surface
Dimensional tolerance: Thickness, width, length and flatness comply with GB/T709 national standard
Working condition matching rule: 15CrMoR/12Cr2Mo1R for high-temperature power station boilers; Q345R for conventional industrial boilers; 09MnNiDR for low-temperature waste heat equipment; HIC resistant boiler plate must be adopted for medium with hydrogen & H2S
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