Langsda Metal Products Co.,Ltd has successfully developed shipbuilding and offshore engineering steel with high-quality, high strength by using micro-alloying composition design, CR/TMCP process and heat treatment. FH40-Z35 and lower grades are approved by CCS, LR, ABS, GL, NK, RINA, KR, BV and DNV. API 2H, 2W and 2Y are approved by API. Langsda Metal Products Co.,Ltd is one of the few manufacturer with API certificate in China.
Typical Steel Grades/Specifications
| Grades | Specification | Size Range/mm | Delivery Condition | |
Normal Strength | A(Z25/Z35) B(Z25/Z35) | Ship Specification | 6-50 | AR |
50-80 | CR | |||
D(Z25/Z35) | 6-80 | CR/N | ||
E(Z25/Z35) | 6-80 | N | ||
6-70 | TMCP | |||
High Strength | AH32(Z25/Z35) DH32(Z25/Z35) | Ship Specification | 6-80 | CR/N |
Technical Agreement | ≦200 | N | ||
AH32(Z25/Z35) DH32(Z25/Z35) | Ship Specification | 8-70 | TMCP | |
F36(Z25/Z35) A40(Z25/Z35) | 8-60 | TMCP | ||
Extra High Strength | EQ47/E460(Z25/Z35) | Ship Specification | 6-60 | TMCP |
EQ47/E460(Z25/Z35) | 6-100 | Q+T | ||
API | API 2H-42﹑50 | API Spec 2H-2006 | 6-100 | N |
API 2W-50﹑60 | API Spec 2W-2006 | 8-60 | TMCP | |
API 2Y-50﹑60 | API Spec 2Y-2006 | 10-100 | Q+T | |
Rack Steel | ASTM A514/517 GrQ Mod | ABS/DVN/CCS | ≦180 | Q+T |
Properties Of Typical Grades
FH40-Z35
a﹑Chemical Composition
| Grades | Chemical Composition(wt%) | ||||||||||
C | Si | Mn | P | S | Al | Cr | Ni | Mo | Nb+V+Ti | Cu | |
FH40-Z35 | ≦0.16 | ≦0.50 | 0.90~1.60 | ≦0.025 | ≦0.025 | ≧0.015 | ≦0.20 | ≦0.80 | ≦0.80 | ≦0.12 | ≦0.35 |
b﹑Machanical Properties
| Size | Rel/ReH/Rt0.5,MPa | RM,Mpa | A% | Z,% | J Longitudinal Impact Energy |
8-60mm | ≧390 | 510-650 | 20 | 35 | 46 |
E690-Z35
a﹑Chemical Composition
| Grades | Chemical Composition(wt%) | ||||||||||
C | Si | Mn | P | S | Al | Cr | Ni | Mo | Nb+V+Ti | Cu | |
FH40-Z35 | ≦0.20 | ≦0.55 | 1.15~1.60 | ≦0.030 | ≦0.030 | ≦0.015 | ≦20 | ≦2.0 | ≦1.0 | ≦0.12 | ≦1.5 |
b﹑Machanical Properties
| Size | Rel/ReH/Rt0.5,MPa | RM,Mpa | A% | Z,% | J Longitudinal Impact Energy |
6-100mm | ≧690 | 770-940 | 14 | 35 | ≧69 |
API 2Y-60
a﹑Chemical Composition
| Grades | Chemical Composition(wt%) | ||||||||||||
C | Si | Mn | P | S | Al | Cr | Ni | Mo | Nb | Cu | CE | Pcm | |
FH40-Z35 | ≦0.12 | ≦0.50 | 1.15~1.60 | ≦0.030 | ≦0.030 | 0.02~0.60 | ≦0.25 | ≦1.0 | ≦0.15 | ≦0.03 | ≦0.35 | ≦0.43 | ≦0.25 |
b﹑Machanical Properties
| Size | Rel/ReH/Rt0.5,MPa | RM,Mpa | A% | Z,% | J Longitudinal Impact Energy |
≦25mm | 414-621 | ≧690 | 16 | -- | ≧48 |
﹥25mm | 414-586 |
Rack Steel
a﹑Chemical Composition
| Grades | Chemical Composition(wt%) | ||||||||
C | Si | Mn | P | S | Al | Nb+V+Ti | Cr+Ni+Mo+Cu | CE | |
Rack Steel | ≦0.16 | ≦0.04 | ≦1.50 | ≦0.01 | ≦0.0050 | ≧0.02 | ≦0.12 | ≦3.0 | ≦0.065 |
b﹑Machanical Properties
| Size | Rel/ReH/Rt0.5,MPa | RM,Mpa | A% | Z,% | J Longitudinal Impact Energy |
|
≦152.4mm | 690-780 | 790-930 | ≧14 | ≧35 | ≧69 |
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