BDS standards for steel materials


This group of Bulgarian (BDS) standards covers carbon, alloy and structural steels, free-cutting steels, plates for pressure vessels, hot-rolled plates, sheets and strips, high-temperature steel castings, welding filler rods, tool steels and electrical quality steels.

Review of BDS Standards for steel consists of 4 volumes. It contains formally approved BDS standard classifications, guides, practices, specifications, test methods, terminology and related material such as proposals.


The following data is given for each standard: standard number and year, grade, chemical composition and mechanical properties (yield point, tensile strength, notch toughness). When deemed useful, steel type, manufacturing method, thickness of plate, heat treatment and other data are described.

Group of standards for structural and constructional steels

BDS 2592 Structural steels
BDS 3492 Unalloyed steel castings
BDS 4758 Concrete steel
BDS 4880 Low alloy steels
BDS 5785 Unalloyed high-grade steels
BDS 5930 Unalloyed boiler steels
BDS 6354 Alloyed constructional steels
BDS 6550 Alloyed steel castings
BDS 6609 High-temperature steels for boiler tubes
BDS 6742 Spring steels
BDS 6886 Free-cutting steels
BDS 7478 High-temperature steel castings
BDS 7933 Narrow gauge rails
BDS 9609 Cold rolled strip
BDS 9793 Rails
BDS 9801 Weldable steels for shipbuilding
BDS 10786 Rails of vacuum-treated steels
BDS 10787 Heat-treated rails
BDS 11488 Cold-rolled sheet for cold-drawing
BDS 12731 Seamless tubes for ball and roller bearings
BDS 14351 Hot rolled sheet for cold-drawing
BDS 15888 Structural steels resistant to weathering
BDS 5084 Welding filler rod
BDS 14679 Wire for built-up welding

Group of standards for tool steels

BDS 6751 Carbon tool steels
BDS 7008 High-speed steels
BDS 7938 Alloyed tool steels

Group of standards for steels with special physical properties

BDS 10112 Electrical quality steel

Group of standards for stainless and heat resisting steels

BDS 6738 Stainless steels
BDS 9631 Stainless steel castings
BDS 9634 Valve steels
BDS 5084 Filler rod
BDS 14679 Rod for built-up welding






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