1. Basic information of S235JR steel pipe
Name: S235JR
Type: European standard non-alloy structural steel pipe
Implementation standard: Implementation of European standard EN10219
Equivalent national standard: Equivalent to national standard Q235B
2. Chemical composition of S235JR:
S235JR C%: 0.17-0.19
S235JR Mn%: 0.14-0.15
S235JR P%: 0.035-0.045
S235JR S%: 0.035-0.045
S235JR N%: 0.012-0.14
S235JR Cu%: 0.40-0.45
3. Comparison of major international standards
United States (ASTM standard)
ASTM A36: The mechanical properties are similar (yield strength ≥ 250MPa, tensile strength 400–550MPa), but the carbon content (≤0.26%) and impurity control are slightly different, suitable for the field of building structures.
ASTM A53 Gr.B: Used for fluid delivery pipelines, yield strength ≥ 240MPa, can partially replace low-pressure pipeline scenarios.
United Kingdom (BS standard)
BS 4360 43A: Yield strength ≥ 235MPa, chemical composition (C ≤ 0.20%, Mn ≤ 1.60%) is highly consistent with S235JR.
Germany (DIN standard)
DIN EN 10025-2 S235JR: Same name as the European standard, directly equivalent.
DIN 17100 St37-2: Old grade, now replaced by EN 10025-2, with the same performance as S235JR.
Japan (JIS standard)
JIS G3101 SS400: Yield strength ≥ 245MPa, but the upper limit of manganese content (≤ 0.90%) is lower than S235JR, and welding performance needs to be verified.
Russia (GOST standard)
GOST 380-2005 St3sp: Yield strength 235–245MPa, suitable for structural parts, but impact toughness requirements need to be confirmed separately (Note: the latest standard needs to be verified).
