Langsda Metal Products Co.,Ltd successfully developed weathering steel with various chemical composition and mechanical properties by using hot rolling, control rolling, TMCP and heat treatment process etc. Maximum thickness limit in Chinese specification. Q355GNH has been delivered to many customers and obtained good reputation.
Typical Steel Grands/Specifications
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Q235NH series | GB/T4171 | ≤100 | AR | |
| Q355NH series | GB/T4171 | ≤100 | CR、N |
Q415NH series | GB/T4171 | ≤60 | CR、TMCP | |
Q460NH series | GB/T4171 | ≤60 | TMCP | |
Q355GNH series | GB/T4171 | ≤50 | CR、N | |
A588 GrA | ASTM A588/A588M | ≤100 | CR、N | |
A588 GrB | ASTM A588/A588M | ≤100 | CR、N | |
Corten B | JX62-117-2011-01 | ≤110 | CR、N | |
A871Gr60 | ASTM A871/A871M | ≤60 | CR、TMCP | |
A871Gr65 | ASTM A871/A871M | ≤40 | TMCP | |
S355JOW、S355J2W | EN10025 | ≤100 | CR、N | |
S355JOWP、S355J2WP | EN10025 | ≤50 | CR、N | |
Corrosion Resistant Steel | 09CrCuSb | Technical Agreement | ≤40 | CR、N |
NS1-1、NS1-2、NS1-3 | Technical Agreement | ≤40 | CR、N | |
Fire Resistant Steel | XC400-FR | Technical Agreement | ≤50 | CR |
XC490-FR | ||||
Properties Of Typical Grades
A871Gr65
a. Chemical Composition
| Steel/Grades | Chemical Composition(wt%) | |||||||||
C | Si | Mn | P | S | Cr | Ni | Mo | V | Cu | |
A871Gr65 | ≤0.19 | 0.3-0.65 | 0.8-1.35 | ≤0.04 | ≤0.05 | 0.4-0.7 | ≤0.04 | - | 0.02-0.1 | 0.25-0.4 |
b. Mechanical Properties
Steel/Grades | Size Range(mm) | Rel(Mpa) | Rm(Mpa) | A(%) | －29℃K V2 (J) |
A871Gr65 | ≤40 | ≥450 | ≥550 | 17 | ≥21 |
09CrCuSb
Chemical Composition
Grades | Chemical Composition(wt%) | ||||||
C | Si | Mn | P | S | Cr+Ni+Cu | Sb | |
09CrCuSb | ≤0.16 | 0.20-0.70 | 0.60-1.30 | ≤0.04 | ≤0.03 | ≤1.40 | 0.04-0.10 |
b. Mechanical Properties
Size Range(mm) | Rel(Mpa) | Rm(Mpa) | A(%) | Bend | |
09CrCuSb | ≤40 | ≥315 | ≥440 | ≥22 | 180° d=3a,OK |
