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Compare / S355 vs Grade 350

S355 vs Grade 350

Europe EN 10025-2:2019 · Steel

S355

Europe's workhorse structural steel: 355 MPa minimum yield up to 16 mm, 470–630 MPa tensile from 3 to 100 mm.

Australia & New Zealand AS/NZS 3678:2016 · Steel

Grade 350

Australian and New Zealand plate grade: 360 MPa yield up to 12 mm, 450 MPa minimum tensile.

ApproximateYield bands differ (360 MPa up to 12 mm, then 350 and 340). Minimum tensile 450 MPa, below S355's 470.

Mechanical

PropertyConditionS355Grade 350Difference
Yield strength ReHt = 12 mm≥ 355MPa3≥ 360MPa2+1.4 %
t = 16 mm≥ 355MPa3≥ 350MPa2−1.4 %
t = 20 mm≥ 345MPa3≥ 350MPa2+1.4 %
t = 40 mm≥ 345MPa3≥ 340MPa2−1.4 %
t = 50 mm≥ 335MPa2≥ 340MPa2+1.5 %
Tensile strength Rmt = 3 mm510–680MPa3≥ 450MPa2−12 %
t = 100 mm470–630MPa5≥ 450MPa2−4.3 %
t = 150 mm450–600MPa2≥ 450MPa2same
t = 250 mm450–600MPa1≥ 450MPa2same
t = 400 mm450–600MPa1≥ 450MPa2same
Elongation after fracture At = 25 mm≥ 22%1≥ 20%1−9.1 %

Rows are matched by condition (thickness band, temperature, product form). A dash means the grade has no sourced value for that condition. Differences are Grade 350 relative to S355; for ranges the lower bound is compared.