S890QL1 high strength steel plate
S890QL1 high strength steel plate
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- Commodity name: S890QL1 high strength steel plate
S890Q/S890QL/S890QL1 HSLA steel plate with Quenching and Tempering Steel， mainly used as low temperature resistant, high strength of key parts, construction machinery, mining machinery structure, etc.
spuuly grade and size
Steel Grades: S890Q/S890QL/S890QL1 . Execution standard: BS EN10025-04
Size: 5 ~ 300 mm x 1500-4500 mm x L
Technical conditions
S890Q/S890QL/S890QL1 Chemical composition %
Material
Quality
C
Mn
Si
P
S
S890Q/S890QL/S890QL1 HSLA steel plate
/
≤0.20
≤1.70
≤0.80
≤0.025
≤0.015
L
≤0.020
≤0.010
L1
≤0.020
≤0.010
S890Q/S890QL/S890QL1 Mechanical properties in table
Material
Yield strength σ0.2 MPa
Tensible strength σb MPa
Elongationδ5 %
V Impact
Lengthways≥6- 50
＞50-100
≥6 -50
＞50-100
S890Q
≥890
≥870
900-1060
≥13
-20℃ ≥30J
S890QL
-40℃ ≥30J
S890QL1
-60℃ ≥30J
S890QL Quenched and Tempered Structural Steel
Hot-Forming
Hot-forming above 580°C is possible. A subsequent quenching and tempering has to be carried out according to the conditions of delivery.
Milling
Drilling with cobalt-alloyed high-speed steels HSSCO. Cutting speed should be approximately 17 - 19 m/min. If HSS drills are used, cutting speed should be approximately 3 – 5 m/min.
Flame-Cutting
The temperature of the material should be at least RT for flame-cutting. In addition, the following preheating temperatures are recommended for certain plate thicknesses: For plate thicknesses over 40mm, preheat to 100°C and for thicknesses over 80mm, preheat to 150°C.
Welding
S890QL steel is suitable for all current welding methods. The temperature of the material should be at least RT for welding. In addition, the following preheating temperatures are recommended for certain plate thicknesses:
20mm – 40mm: 75°C
Over 40mm: 100°C
60mm and over: 150°C
These indications are standard values only, in principle, indications of SEW 088 should be adhered to.
The t 8/5 times should be between 5 and 25 s, depending on the welding technique used. Should stress relief annealing be necessary for constructional reasons, this should be done in the temperature range of 530°C-580°C .
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To: Tianjin Bohai Metal Company
Tianjin Bohai Metal
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Fax :+86 0635 6666186
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