DIN 17155 Pressure Vessel Carbon Steel Coil

DIN 17155 is a ‌carbon-molybdenum and chromium-molybdenum steel‌ designed for boilers, pressure vessels, and high-temperature pipelines operating at ‌-20°C to 600°C‌. Available in grades like ‌15Mo3‌, ‌13CrMo44‌, and ‌19Mn6‌, it combines elevated temperature strength with creep resistance, meeting ‌EN 10028-2 P355GH‌ and ‌ASME SA-387‌ standards. Ideal for power plants and petrochemical refineries, it replaces costlier stainless steels in steam drums, heat exchangers, and hydrocrackers.
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Product Introduction

DIN 17155 Pressure Vessel Carbon Steel Coil: High-Temperature Alloy for Industrial Boilers & Pressure Systems‌


‌DIN 17155 Pressure Vessel Carbon Steel Coil Product Overview‌

DIN 17155 is a ‌carbon-molybdenum and chromium-molybdenum steel‌ designed for boilers, pressure vessels, and high-temperature pipelines operating at ‌-20°C to 600°C‌. Available in grades like ‌15Mo3‌, ‌13CrMo44‌, and ‌19Mn6‌, it combines elevated temperature strength with creep resistance, meeting ‌EN 10028-2 P355GH‌ and ‌ASME SA-387‌ standards. Ideal for power plants and petrochemical refineries, it replaces costlier stainless steels in steam drums, heat exchangers, and hydrocrackers.


‌Key Technical Specifications‌

‌1. Manufacturing & Dimensional Tolerances‌

  • ‌Process‌:
    • Hot-rolled: 2.75–150mm (±1.0% thickness tolerance per DIN EN 10029)
    • Cold-rolled: 0.2–3mm (±0.25% tolerance for precision forming)
  • ‌Width‌: 45–2,200mm (compatible with CNC machining for flanges/nozzles)
  • ‌Surface‌: Shot-peened (SA 2.5) or pickled (EP coating for corrosion resistance)

‌2. Chemical Composition‌

Grade C (%) Mo (%) Cr (%) Mn (%) Key Alloy Features
‌15Mo3‌ 0.12–0.20 0.25–0.35 ≤0.25 0.40–0.90 Mo-enhanced creep resistance
‌13CrMo44‌ 0.08–0.18 0.40–0.60 0.70–1.10 0.40–1.00 Cr-Mo synergy for oxidation resistance
‌19Mn6‌ ≤0.20 ≤0.08 ≤0.30 0.90–1.70 High Mn for weldability

Trace elements:

  • ‌P/S‌: ≤0.035% (Grade 15Mo3), ≤0.025% (Grade 19Mn6)
  • ‌Al‌: ≥0.020% for grain refinement

‌Mechanical Properties‌

Grade Tensile (MPa) Yield (MPa) Elongation (%) Impact Energy (J @ -20°C) Creep Strength (MPa @ 500°C)
‌15Mo3‌ 450–600 ≥270 22 40 120
‌13CrMo44‌ 520–670 ≥310 18 35 180
‌19Mn6‌ 540–700 ≥355 20 45 N/A (ambient temp use)

Test methods:

  • ‌Tensile‌: DIN EN ISO 6892-1 (strain rate 0.006/min)
  • ‌Impact‌: DIN EN ISO 148-1 (Charpy V-notch, 10x10mm)
  • ‌Hardness‌: 160–220 HBW (Grade 15Mo3 normalized)

‌Performance Advantages‌

  1. ‌High-Temperature Stability‌:
    • ‌Creep rupture life‌: 100,000 hours @ 550°C (13CrMo44)
    • ‌Oxidation resistance‌: ≤1.5 mm/year scaling @ 600°C
  2. ‌Weldability‌:
    • ‌Preheat‌: 150–200°C (GTAW with ER90S-B3 filler)
    • ‌PWHT‌: 680–720°C (mandatory for Cr-Mo grades to avoid HAZ cracking)
  3. ‌Cost Efficiency‌:
    • ‌35% lower cost‌ vs. 316L stainless steel in steam headers
    • ‌20% thinner walls‌ vs. carbon steel due to higher yield strength
  4. ‌Corrosion Resistance‌:
    • ‌H₂S service‌: NACE MR0175 compliant for sour gas pipelines
    • ‌CO₂ corrosion rate‌: <0.1 mm/year with proper coatings

‌Applications‌

Industry Use Case Recommended Grade
‌Power Plants‌ Superheater tubes (550°C, 25 MPa) 13CrMo44
‌Petrochemical‌ Hydrocracker reactors (450°C) 15Mo3
‌Oil & Gas‌ Sour gas separators 19Mn6

‌Global Equivalents‌

DIN 17155 EN 10028 ASTM JIS G4053 GB 5310
15Mo3 16Mo3 SA-204 Gr. B STPA12 15MoG
13CrMo44 13CrMo4-5 SA-387 Gr. 12 STBA22 13CrMo44
19Mn6 P355GH SA-516 Gr. 70 SPV355 Q345R

‌Sustainability & Compliance‌

  • ‌Recycled Content‌: 82% (certified per DIN EN 10025)
  • ‌RoHS Compliance‌: Lead-free, Cd <0.01%
  • ‌Certifications‌: AD 2000-Merkblatt W0, KOSHA PS001

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Luo Kaiwei Steel Company is a comprehensive steel supplier that produces a variety of carbon steel plates, carbon steel pipes, galvanized steel, carbon steel coils, and steel profiles.

Luo Kaiwei Steel Company is a multi-ISO certified steel manufacturer specializing in carbon steel plates, pipes and galvanized coils since 2010. Competitive prices and ASTM/JIS compliant. Get instant quotes for bulk orders and global shipping support.

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