A reliable, creep resistant bolting material, developed as an alternative to Durehete™ 1055. It is known for its temperature strength and relaxation resistance to 570°C, becoming a growing choice within power generation plants.


CEGB 0259604/82 (T41)

BS 1506 681-820

BS 4882 B16A

Siemens AG Spec TLV 9185 01

Siemens 221

BSEN 10269 1999 Material Number 1.7729

Durehete™ 1055  *

Fully certified material, additional testing available

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BMG-AT41® has been approved for use by:

Drax Power

Siemens UK and Germany


Doosan Babcock / Doosan Heavy Industry

EDF (for use in Coal and Nuclear applications)

GE (USA and UK)


Weir Group (Allen Steam Turbines)

Alstom (South Africa).

BMG-AT41® Mechanical Properties

Dia0.2% PSUTSElongationRed of AreaEnergy Impact
n/mm2n/mm2% on 5d%CharpyIZOD
minminJ aveJ min
<= 100mm660820-97015504027
>= 100mm660820-97015502727

BMG-AT41® Chemical Composition


For more technical information download our BMG-AT41 information sheet here


BMG-AT41 is specifically designed for use in the power generation industry, within coal power stations, nuclear, biomass projects and power generation plants globally.

End uses:

  • Fasteners
  • Boiler support rods
  • Turbine studs

“We are not the biggest steel distributor around, but have differentiated ourselves by focusing on service, reliability and trying to find ways of helping customers rather than by just supplying metal – conversion, holding specific stock for quick delivery and consignment stock”

Mike Andrews

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