WELDOX are high-strength structural steels with yield strength ranging from 420 to 1100 MPa. Their principle lies in achieving the given degree of strength while maintaining the best possible weldability. The result is for example WELDOX 700 with yield strength 700 MPa, which at 20 mm thickness has identical weldability as steel 11523.
Quality |
Thickness [mm] |
Reh [MPa] |
Rm [MPa] |
Impact energy |
| WELDOX 355 | 8 - 16 | 355 | 450 - 610 | 40J |
| (16) - 25 | 345 | 450 - 610 | ||
| WELDOX 420 | 8 - 16 | 420 | 520 - 660 | 27J |
| (16) - 40 | 400 | 520 - 660 | ||
| (40) - 63 | 390 | 500 - 660 | ||
| (63) - 80 | 380 | 480 - 640 | ||
| WELDOX 460 | 8 - 16 | 460 | 540 - 720 | 27J |
| (16) - 40 | 440 | 510 - 720 | ||
| (40) - 63 | 430 | 530 - 710 | ||
| (63) - 80 | 420 | 510 - 690 | ||
| WELDOX 500 | 8 -16 | 500 | 570 - 720 | 40J |
| (16) - 40 | 480 | 570 - 720 | ||
| (40) - 80 | 460 | 550 - 720 | ||
| WELDOX 700 | 5 - 50 | 700 | 780 - 930 | 27J |
| (50) - 100 | 650 | 780 - 930 | ||
| 100 - 130 | 630 | 710 - 900 | ||
| WELDOX 900 | 4 - 50 | 900 | 940 - 1100 | 27J |
| (50) - 80 | 830 | 880 - 1100 | ||
| WELDOX 960 | 4 - 50 | 960 | 980 - 1150 | 27J |
| WELDOX 1100 | 4 - 25 | 1100 | 1250 - 1550 | 27J |
| WELDOX 1300 | 4 - 10 | 1300 | 1400 - 1700 | 27J |
WELDOX 355
Welded girders made of the WELDOX 355 material
WELDOX 420
Compactor wheels made of the WELDOX 420 material
WELDOX 500
Mining roof support is made of WELDOX 500
WELDOX 700
Trailer made of the WELDOX 700 material to make its construction lighter and stronger
WELDOX 900
WELDOX 960
WELDOX as a material has contributed towards the revolution in the development of travelling cranes. By utilising the strength of these steels, the maximum load capacity of these cranes increased eight-fold without increasing their weight.
WELDOX 960 is in the largest models used for all load-bearing structures - the boom, the rotating mechanism, the undercarriage and the stabilising supports.
Each kilogram of weight saved reduces the dead weight and increases the crane's load capacity. Booms are manufactured according to stringent requirements on bendability, planeness and quality of the surface, which are exactly the properties which the WELDOX steels offer.
WELDOX 1100
It used to take a crew of sixty 10 hours to assemble a mobile bridge of a maximum span 30 m in the past. Meeting today's requirements, Karlskronavarvet AB has developed and built a very modern mobile bridge using the best steel available on the market - WELDOX 1100. It takes a crew of seven workers about 75 minutes to assemble the FB48 bridge. The span of the bridge is 46 metres without additional supports.
WELDOX steels are also available in versions marked D, F (e.g. WELDOX 700 D), where D means a guaranteed value of impact strength KV at -20°C, E means a guaranteed value of impact strength KV at -40°C and F at -60°C. It corresponds to EN 10137 coding Q or QL1 (e.g. S 690 QL).