Xabo960 High Strength Steel Plate
XABO® 890 and XABO® 960 are low-alloyed structural steels supplied in the quenched and tempered condition and usually employed as-delivered in subsequent fabrication processes. The steels are delivered in two different grades with a minimum yield strength of 890 resp. 960 N/mm². Details concerning their chemical composition and mechanical properties can be found in the TKS material specification 245.
When welding these steels it must be ensured that the unavoidable thermal effects resulting from the process do not adversely affect the properties more than is admissible for the application concerned. As the welding conditions decisively influence the properties of the joints, it is the fabricator's responsibility to ensure, by selecting the appropriate parameters, that the requisite mechanical properties are present both in the weld metal and in the heataffected
zone (HAZ) of the welds. Details concerning the filler metals for XABO® 890 and XABO® 960 and aspects of welding which should be observed are given in the following.
Application:
The steels are used for welded constructions of all kinds such as transport vehicles, mobile cranes, hoistings and mining equipment, pressure vessels and penstocks.
The entire processing technique is of fundamental importance for the good performance of the products made of these steels. The processor must assure himself, that his methods of calculation, designing and working conform with the material to be used, meet the latest requirements of technical progress, and are suited to the proposed application. Due consideration must be given to relevant construction specifications.
The steel XABO® 890 has been approved under the terms of the provisions in force in the Federal Republic of Germany for the construction of pressure vessels (see VdTÜV-Werkstoffblatt 417).
The selection of the material is left up to the purchaser. Chemical composition (heat analysis, %)
The steel has a fine-grained microstructure. Nitrogen is absorbed to form nitrides.
Delivery condition:
quenched and tempered (see paragraph "Heat treatment")
Mechanical properties in the state of delivery condition at room temperature (transverse test specimens according to ISO 6892-1, method B). If continuous yielding occurs, the yield strength is determined as Rp0,2
Preparation of the tensile test specimens according to EN 10025 - part 1 and part 6.
The delivery of steel XABO® 960 in thicknesses ≤ 100mm, with improved forming properties perpendicular to the product surface in quality Z25 according to EN 10164, may be agreed separately at the time of order.
Chemical Composition:
C | Si | Mn | P | S | Cr | Mo | Ni | V |
≤ 0.18 | ≤ 0.5 | ≤ 1.6 | ≤ 0.020 | ≤ 0.010 | ≤ 0.8 | ≤ 0.7 | ≤ 2.0 | ≤ 0.1 |
Mechanical Properties:
Steel grade plate thickness mm | Minimum yield strength ReH *) MPa 2) | Tensile strength Rm MPa | Minimum elongation at fracture A % | ||||||
XABO® 890 | 890 | 830 | 940-1100 | 880-1100 | 12 | ||||
XABO® 960 | 960 | 920 | 870 | 850 | 980-1150 | 970-1100 | 920-1070 | 900-1050 |
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