15CrMoR
A High-Performance Chromium-Molybdenum Steel for Demanding Industrial Applications
15CrMoR Pressure Vessel Steel Plate
Overview
15CrMoR is a chromium-molybdenum alloy steel plate designed for pressure vessels operating in medium-temperature and hydrogen-containing environments. Compliant with GB/T 713.2-2023 (China), it combines excellent high-temperature strength, hydrogen corrosion resistance, and weldability, making it a preferred material for critical infrastructure in energy, petrochemical, and power generation industries.
Mechanical Properties
Room Temperature Performance (Normalized & Tempered State):
- Tensile Strength: 440–590 MPa
- Yield Strength:
- 6–60 mm thickness: ≥295 MPa
- 60–100 mm: ≥275 MPa
- 100–150 mm: ≥255 MPa
- Elongation: ≥19%
- Impact Toughness (Charpy V-notch, 20°C): ≥31 J
High-Temperature Performance:
Applications
15CrMoR is widely used in:
- Petrochemical Industry:
- Hydrogenation reactors
- High-temperature heat exchangers (≤550°C)
- Catalytic cracking units
- Power Generation:
- Boiler drums (≤17 MPa pressure)
- Nuclear reactor auxiliary systems
- Coal Gasification:
- Gasifier shells
- Synthesis gas reactors
- Energy Storage:
- LNG storage tanks
- High-pressure gas cylinders
Heat Treatment & Processing
Delivery Condition: Normalized (900–930°C) + Tempered (620–680°C).
Welding Guidelines:
- Preheating: 150–200°C for thickness >25 mm.
- Recommended Electrodes: E8018-B2 (manual arc welding), ER80S-B2L (TIG/MIG).
- Post-Weld Heat Treatment: Stress relief at 620–650°C.
Critical Note: Avoid prolonged exposure to temperatures >600°C to prevent creep damage.
Quality Control & Testing
- Non-Destructive Testing (NDT):
- Ultrasonic Testing (UT): Grade II for thickness >36 mm, Grade III for 30–36 mm.
- Hardness Control: ≤225 HB in weld zones.
- Certification: Mill Test Certificates (MTC) with actual yield/tensile ratios and impact test reports.
Advantages of 15CrMoR
- Hydrogen Resistance: Minimizes hydrogen embrittlement in sour service environments.
- Cost Efficiency: Reduces material thickness by 15–20% compared to carbon steels.
- Versatility: Suitable for ASME, PED, and GOST-certified projects.
Types of steel we supply with high-quality
Frequently asked questions
Do you keep large quantities in stock monthly?
Yes, we are Baosteel's long-term first-level dealer, always keeping a large amount of steel in stock, and give priority to ordering and scheduling production at Baosteel Group as well as Xingcheng Special Steel.
Can we visit your office and the warehouse?
Of course, we welcome you to visit our office and warehosue. We can also show you all all the production lines of steel mills we cooperated with to more about our capacity and quality.
Do you have quality control system?
We have ISO, BV, SGS certifications and cand conduct product performance testing based on customer requirements.
Can you provide steel processing services?
We have multiple warehouses with long-term agreements, able to provide high-quality processing and packaging services to meet your requirement.
What are the payment methods?
We accept T/T and L/C. For other payment methods, please contact us for further communication.
How long is your delivery time?
For goods in stock , it takes 3 to 7 days.If we need to order from steel mills, it will take around 25-45 days depends on the specific products and different steel mills.
How do you keep long-term business and good relationship?
We always keep supplying good quality products with competitive prices and provide one stop service.We wish to establish long-term cooperative relationships with you, to achieve the best interests and to become the true friends.