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Hydrogen Embrittlement Resistant Stainless Steel Spring Wire

HYBREM®-S, is hydrogen embrittlement resistant stainless steel spring wire that has superior hydrogen embrittlement resistance and spring wire characteristics.
It is developed to be used under low temperature, high pressure hydrogen atmosphere conditions such as hydrogen stations or fuel cell vehicles-related.

Hydrogen Embrittlement Characteristics Comparison


1. Good Hydrogen Embrittlement Resistance
Even under low temperature condition, its reduction ratio will not go down when carrying out ultra-low strain rate tensile test under high pressure hydrogen atmosphere.
2. High strength
Tensile strength equivalent to SUS304(WPB)
3. Good Spring Characteristics
Fatigue limit decline is kept to the minimum when carrying out fatigue test under hydrogen charged atmosphere.

Reduction Ratio Change(H2、Ar Environment)

Reduction Ratio Change(H2、Ar Environment)

Fatigue Properties

Spring Fatigue Characteristics


  • ・ High Pressure Hydrogen Gas Pressure Control Valve (Main Stop Valve、Pressure Reducing Valve、Check Valve)
  • ・ High Pressure Hydrogen Filling Valve
  • ・ Spring for Fuel Cell Vehicles
  • ・ Springs for Stationary Fuel Cell Systems

Primary Technical Specifications

diameters (mm) Tensile strength (N/mm2)
0.50 - 1.00 1850 - 2100
1.20 - 1.40 1750 - 2000
1.60 - 2.00 1650 - 1900
2.30 - 2.60 1550 - 1800
2.90 - 4.00 1450 - 1700