Abstract: A steel alloy for use as a material for storage tubes adapted to receive pressed objects of metal powder, which can store hydrogen and release the same, is of the composition comprised of 0.14 to 0.18 weight percent of carbon material 0.15 to 0.3 weight percent of silicon, maximum 0.025 weight percent of phosphorus, maximum 0.025 weight percent of sulfur, from 1.9 to 2.1 weight percent of chrome, from 0.45 to 0.60 weight percent of molybdenum, at least 0.015 to 0.030 weight percent of aluminum, and iron.

Abstract: A continuous casting mold arrangement for multiple continuous casting installations for producing casting strands of a substantially rectangular cross-section, has a plurality of continuous casting molds each including at least two mold parts displaceable relative to one another in a displacement direction transverse to a strand direction so as to change a strand cross-section, wherein the continuous casting molds are arranged one behind the other in the displacement direction and the respective mold parts of each two neighboring continuous casting molds are connected with one another.

Abstract: A tubular reinforcing element for the interior of vehicle doors is made from a steel tube having a carbon content of 0.14-0.18%, 0.15-0.30% silicon, 1.60-1.80% manganese, 1.90-2.10% chromium, 0.45-0.60% molybdenum and at least 0.015% aluminum. This tube is annealed at 900.degree.-930.degree. C. and then aircooled. Thereafter the portions of the tube which are to be deformed are heated to above the temperature of the alpha-gamma phase change (A.sub.3 on the iron-carbon equilibrium diagram), then deformed to the desired shape and aircooled. All percentages are by weight.

Abstract: A method for forming cooling coils of successive layers of rectangular configuration, in which the front end of an elongated tube is threaded between rolls of a straightening apparatus and clamped onto the periphery of a rectangular table, whereafter the table is rotated about a central axis while the incoming tube shifted in direction of this axis, and while the tube upstream of the table is held in taught condition by the straightening apparatus so that the tube is wound into a coil of rectangular configuraton about the table. After a coil of predetermined length has thus been wound, the table is stopped, the tube cut between the straightening apparatus and the table and the cut rear end of the tube is also clamped to the table.

Abstract: A rotatable shaft has a roller electrode mounted on it for rotation therewith. A transformer and a rectifier are structurally integrated to form a unit which is also mounted on the shaft for rotation with it, and serve to convert high-voltage low-amperage net current into low-voltage high-amperage DC current. Slip rings are mounted on the shaft to transmit electrical current to the unit for supply to the roller electrode.