GB/T 4171 atmospheric corrosion resisting structural steel

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GB/T 4171 atmospheric corrosion resisting structural steel

GB/T 4171 atmospheric corrosion resisting structural steel
Standard: GB/T 4171-2008
Grades: Q235NH, Q265GNH, Q295NH, Q295GNH, Q310GNH, Q355NH, Q355GNH, Q415NH, Q460NH, Q500NH, Q550NH
Category: atmospheric corrosion resisting structural steel
Feature: atmospheric corrosion resistance property
Application: vehicles, bridges, containers, buildings, towers and other structural parts.
Thickness size range: up to 100mm
Shapes: plates, sheet, strip and section

GB/T 4171 steel equivalent

GB/T4171-2008 ISO 4952-2006 ISO5952-2005 EN10025-5: 2004 JIS G3114-2004 JIS G3125-2004
Q235NH S235W HSA235W S235J0W,J2W SMA400AW,BW,CW -
Q355NH S355W HSA355W2 S355J0W,J2W,K2W SMA490AW,BW,CW -
Q355GNH S355WP HSA355W1 S355J0WP,J2WP - SPA-H
Q460NH S460W - - SMA570W,P -
 

Chemical composition (%) for GB/T 4171 steel in 2008 version

Grade Carbon Silicon Manganese Phosphorous Sulfur Copper Chromium Nickel
Q235NH ≤0.13 0.10-0.40 0.20-0.60 ≤0.030 ≤0.030 0.20-0.55 0.40-0.80 ≤0.65
Q265GNH ≤0.12 0.10-0.40 0.20-0.50 0.07-0.12 ≤0.020 0.20-0.45 0.30-0.65 0.25-0.50
Q295NH ≤0.15 0.10-0.50 0.30-1.00 ≤0.030 ≤0.030 0.25-0.55 0.40-0.80 ≤0.65
Q295GNH ≤0.12 0.10-0.40 0.20-0.50 0.07-0.12 ≤0.020 0.25-0.45 0.30-0.65 0.25-0.50
Q310GNH ≤0.12 0.20-0.75 0.20-0.50 0.07-0.12 ≤0.020 0.20-0.50 0.30-1.25 ≤0.65
Q355NH ≤0.16 ≤0.50 0.50-1.50 ≤0.030 ≤0.030 0.25-0.55 0.40-0.80 ≤0.65
Q355GNH ≤0.12 0.20-0.75 ≤1.00 0.07-0.15 ≤0.020 0.25-0.55 0.30-1.25 ≤0.65
Q415NH ≤0.12 ≤0.65 ≤1.10 ≤0.025 ≤0.030 0.25-0.55 0.30-1.25 0.12-0.65
Q460NH ≤0.12 ≤0.65 ≤0.15 ≤0.025 ≤0.030 0.20-0.55 0.30-1.25 0.12-0.65
 

Mechanical properties in 2008 version

Grade Yield strength(MPa) min for Thickness in mm Tensile strength
(Mpa)
Elongation(%)
≤16 >16≤40 >40≤60 >60 ≤16 >16≤40 >40≤60 >60
Q355GNH 355 345 - - 490-630 22 22 - -
Q310GNH 310 - - - ≥450 26 - - -
Q295GNH 295 285 - - 430-560 24 24 - -
Q265GNH 265 - - - ≥410 27 - - -
Q235NH 235 225 215 - 360-510 25 25 24 23
Q295NH 295 285 275 255 430-560 24 24 23 22
Q355NH 355 345 335 325 490-630 22 22 21 20
Q415NH 415 405 395 - 520-680 22 22 20 -
 
GB/T 4171 atmospheric corrosion resisting structural steel is produced in cold-rolled and hot rolled -rolled steel plates, sheets and sections. Due to the good quality of atmospheric corrosion resistance, GB/T 4171 steel plates can be used in vehicles, bridges, containers, buildings, towers and other structures.
 

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