LK490C steel is a low-alloy high-strength steel and is a blast furnace shell steel. LK490C steel has low sulfur and phosphorus content, good comprehensive mechanical properties, welding performance and low temperature impact toughness.
LK490C furnace shell steel heat treatment delivery status:
The delivery state of LK490C steel plate is normalized, and at the same time, it can meet the user's requirements for carbon equivalent, flaw detection, positive deviation, Z-direction performance, simulated post-weld heat treatment (SR), hardness, high temperature tensile and other requirements according to customer requirements.
LK490C steel ultrasonic flaw detection standard level: first-level flaw detection, second-level flaw detection, third-level flaw detection.
Chemical composition of LK490C steel plate:
| Grade | C | Si | Mn | P≤ | S≤ | Alt | Nb | Ti | N(ppm)≤ |
| LK490C | 0.12-0.18 | 0.30- 0.60 | 1.25- 1.60 | 0.020 | 0.015 | 0.010 -0.050 | 0.010-0.045 | 0.008-0.035 | 70 |
Mechanical properties of LK490C steel plate:
| Grade | Thickness | Tensile Test | Charpy V-notch Impact Test | 180° Cold Bend b=35mm |
|||
| Yield strength ReL,MPa | Tensile strength Rm,MPa | Elongation,A,% | Impact energy Akv, J, longitudinal,0℃ | Room temperature aging impact energy Akvs, J, transverse | |||
| LK490C | ＞16-40 | ≥315 | 490-610 | ≥21 | ≥47 | ≥34 | d=3a |
| ＞40-100 | ≥295 | ||||||
LK490C furnace shell steel is suitable for manufacturing large blast furnace shells over 1000 cubic meters, hot blast stove, converter shell, blast furnace upper and lower pipes, and steel plates for spherical structure.
Email：bb@bebonchina.com
Tel：0086-371-86151827
Skype：bebonchina
