Description: BBN steel is a well-known steel manufacturer and service provider in China, GB/T 3077 15CrMo alloy steel is our superior product, we are favored by customers with high quality, competitive price and excellent service
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram
Chinese Low-Alloy Cr-Mo Heat-Resistant Steel | Excellent Oxidation & Hydrogen Corrosion Resistance | For Boiler, Petrochemical & Chemical | MTC & Third-Party Inspection
High-Temperature & H2 Resistance15CrMo delivers outstanding high-temperature oxidation resistance, hydrogen corrosion resistance and thermal creep stability for long-term service up to 540°C.
Stable High-Temp StrengthCompared with ordinary carbon steel, 15CrMo provides more stable high-temperature mechanical strength and durability under high-pressure conditions.
Stock & Fast DeliveryPlates 5–150 mm in stock, MTC available, custom cutting, flattening and third-party inspection supported.
01Product Overview & Specifications
GB/T 3077 15CrMo is a common Chinese low-alloy chromium-molybdenum heat-resistant steel featuring excellent high-temperature oxidation resistance, hydrogen corrosion resistance and thermal creep stability, suitable for long-term service under high-temperature and high-pressure working conditions up to 540°C.
Due to its alloy composition, 15CrMo has an obvious hardening tendency and poor weldability. Preheating and post-weld stress relief heat treatment are required during processing to prevent cracking, while it still provides more stable high-temperature strength than ordinary carbon steel plates.
Item
Specification
Executive Standard
GB/T 3077 Alloy Structural Steels
Steel Grade
15CrMo — low-alloy Cr-Mo heat-resistant steel
Steel Category
Alloy Structural Steel (Cr-Mo, heat-resistant)
Product Form
Alloy Steel Plate
Thickness Range
5mm – 150mmcustomizable
Width Range
1000mm – 4500mmcustomizable
Length Range
3000mm – 18000mmcustom fixed length
MOQ
1 PC
Delivery Time
Promptly (Stock) / Custom production: 10 – 40 working days
Stock Status
Available
Certification
Mill Test Certificate (MTC) available, third-party inspection supported
Payment Terms
T/T, L/C At Sight
02Equivalent International Steel Grades
15CrMo is a widely used pearlitic heat-resistant steel plate for boilers and pressure vessels. It has mature equivalent grades in international standards for reliable cross-standard engineering substitution.
Standard System
Equivalent Grade
GB/T 3077 (China)
15CrMo
ASTM
A387 Gr11 / A182 F11
JIS
SCMV4
EN
13CrMo4-5 (1.7335)
Note: 15CrMo is by designation a chromium-molybdenum heat-resistant steel. The equivalent grades above (ASTM A387 Gr11 / A182 F11, JIS SCMV4, EN 13CrMo4-5) are widely accepted cross-standard substitutes for boiler and pressure-vessel applications; however, confirm detailed composition limits and certification under the target standard before design-critical use.
03Grade Designation & Meaning
The GB/T 3077 designation 15CrMo encodes the carbon level and the alloying elements of this low-carbon heat-resistant chromium-molybdenum steel.
15
15 — Carbon Content
Indicates a mean carbon content of approximately 0.15% (100 × C%) for low-carbon composition and good processability.
Cr
Cr — Chromium
Chromium improves high-temperature oxidation resistance and hydrogen corrosion resistance of the heat-resistant steel.
Mo
Mo — Molybdenum
Molybdenum raises high-temperature strength and thermal creep stability for long-term elevated-temperature service.
540
540°C — Service Temperature
Designed for long-term high-temperature and high-pressure service up to 540°C with stable creep resistance.
15CrMo welding & processing note: 15CrMo is a low-carbon Cr-Mo heat-resistant steel. Its alloy composition gives an obvious hardening tendency and poor weldability; preheating before welding and post-weld stress relief heat treatment are required to prevent cracking. Compared with higher-carbon chromium-molybdenum grades, it is optimized for welded high-temperature pressure components where long-term high-temperature stability and hydrogen-resistance matter more than peak room-temperature strength.
04Chemical Composition
Composition limits of 15CrMo per GB/T 3077 (values in %, unless a range is given).
Element
Content (%)
C (Carbon)
0.12 – 0.18
Si (Silicon)
0.17 – 0.37
Mn (Manganese)
0.40 – 0.70
Cr (Chromium)
0.80 – 1.10
Mo (Molybdenum)
0.40 – 0.55
Ni (Nickel, max)
0.30 max
Nb + Ta
—
P (Phosphorus)
0.035 max
S (Sulfur)
0.035 max
Note: Composition limits above are those supplied for this page per GB/T 3077 (C, Si, Mn, Cr, Mo, Ni, P, S). 15CrMo is by designation a chromium-molybdenum heat-resistant steel; the heat-analysis of each batch is stated in its Mill Test Certificate (MTC). Nb + Ta is not specified for this grade in the provided data.
05Mechanical Properties
Mechanical properties of 15CrMo in the heat-treated (normalizing + tempering) condition per GB/T 3077 (reference values; actual results depend on section size and heat-treatment parameters).
235 MPaMin. Yield Rp0.2Heat-treated
440 – 640 MPaTensile RmHeat-treated
Mechanical properties of 15CrMo (GB/T 3077):
Grade
Tensile Rm (MPa)
Yield Rp0.2 (MPa, min)
Elongation (%)
15CrMo
440 – 640
235
21
Note: 15CrMo is a heat-resistant steel; the values above are achieved after normalizing and tempering. Due to its alloy composition, 15CrMo has an obvious hardening tendency and poor weldability — preheating before welding and post-weld stress relief heat treatment are required to prevent cracking. Hardness (HBW) depends on the heat-treatment condition and is confirmed in the MTC for your required condition.
06Product Types, Processing & Service
BBN Steel stocks a wide range of 15CrMo heat-resistant alloy steel plates with full traceability and official Mill Test Certificates, ideal for boiler, petrochemical, chemical and high-temperature pressure equipment.
1
Alloy Steel Plate
Hot-rolled plates 5–150 mm thick, 1000–4500 mm wide, 3000–18000 mm long; customizable fixed length.
2
Stock & Traceability
Plates available in stock, fully traceable, MTC provided upon purchase.
3
Cutting & Processing
Custom cutting, flattening and processing per your drawings; third-party inspection supported.
1
Fast Delivery
Common sizes shipped promptly from stock; custom production 10–40 working days.
2
MTC & Inspection
Mill Test Certificates available; third-party quality inspection supported.
3
Flexible Payment
T/T and L/C at sight accepted for your convenience.
4
24h Consultation
Professional sales team provides 24-hour online consultation and quotation.
GB/T 3077 15CrMo alloy steel plates, 5–150 mm thickness, 1000–4500 mm width, 3000–18000 mm length
Low-alloy Cr-Mo heat-resistant steel, excellent oxidation & hydrogen corrosion resistance, service up to 540°C
For boiler components, high-temperature reactors, heat exchangers, separators and pressure storage tanks
MTC available, third-party inspection supported, full material traceability
T/T and L/C at sight payment, stock available, custom cutting and flattening
Get Your GB/T 3077 15CrMo Steel Plate Quotation Now
Send us your dimensions (thickness × width × length), quantity, and application (e.g. boiler, reactor or heat exchanger). We will reply with stock status, competitive factory price and complete certification.
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