🟧 Product Overview

DIN 17155 is a German pressure vessel steel standard widely used in boilers, pressure vessels, and industrial pressure systems. It includes grades such as HII, HI, 17Mn4, and 19Mn6, each offering different combinations of strength, toughness, and elevated‑temperature performance.

These steels are known for their excellent weldability, good ductility, and reliable performance under high pressure and moderate‑to‑high temperatures.

🟧 Standards

• DIN 17155 – Pressure Vessel Steel
• Related Standards: ASTM A516, ASTM A537, ASTM A387, EN 10028, JIS G3103, GB Q245R/Q345R/Q370R

🟧 International Pressure Vessel Steel Standards Comparison Table

Country	Standard	Common Grades
China	GB 713 / GB 19189	Q245R, Q345R, Q370R
America	ASTM A516 / A515 / A537 / A387 / A203 / A204 / A285 / A202	A516 Gr60/70, A515, A537, A387, A203, A204, A285, A202
Germany	DIN 17155	HII, 19Mn6
Japan	JIS G3103	P235GH, P265GH, P295GH, P355GH
France	NF A 36‑205	A42CP, A48CP
Britain	BS 1501	161‑430A/B
International (EN)	EN 10028	P235GH, P265GH, P355GH

🟧 Available Grades

• DIN 17155 HI
• DIN 17155 HII
• DIN 17155 17Mn4
• DIN 17155 19Mn6

🟧 Product Specifications & Available Sizes

Dimensions

• Thickness: 3 – 20 mm
• Width: 1000 – 2000 mm
• Coil ID: 508 mm / 610 mm
• Coil OD: 900 – 2000 mm
• Coil Weight: 3 – 15 MT

Regular Sizes (mm)

Size	Size
3.0 × 1500 × C	5.75 × 1800 × C
3.5 × 1500 × C	5.75 × 2000 × C
3.75 × 1500 × C	7.75 × 2000 × C
4.5 × 1500 × C	7.5–11.75 × 1500 × C

🟧 Chemical Composition (DIN 17155 HII – typical)

Element	Max (%)
C	0.20
Mn	1.40
P	0.025
S	0.025
Si	0.40

🟧 Mechanical Properties (DIN 17155 HII – typical)

Property	Value
Yield Strength	≥ 265 MPa
Tensile Strength	410–530 MPa
Elongation	≥ 22%
Elevated‑Temperature Strength	Good

🟧 Physical Properties

• Density: 7.85 g/cm³
• Modulus of elasticity: 200 GPa
• Thermal expansion: 12×10⁻⁶ /K

🟧 Manufacturing Processes

• Hot rolling
• Normalizing (optional)
• Pickling
• Leveling
• Slitting / Cutting to length
• Surface oiling

🟧 Primary Industry Usage

• Boilers
• Pressure vessels
• Heat exchangers
• Petrochemical equipment
• Industrial pressure systems
• Moderate‑to‑high temperature welded structures

🟧 Why Use DIN 17155 Pressure Vessel Steel Coil

• Reliable German‑standard pressure vessel steel
• Good weldability and forming performance
• Stable mechanical properties at elevated temperatures
• Suitable for a wide range of industrial pressure applications

🟧 Why Choose WelSteels

• Full range of pressure vessel steel coils
• Consistent dimensional accuracy
• Custom coil cutting and slitting
• SGS / BV inspection available
• Export‑grade seaworthy packaging
• Reliable delivery for global projects