Prodec 17-4PH

General characteristics

A martensitic, precipitation hardening stainless steel for applications that use Dura 17-4PH. It improves productivity with faster machining, longer tool life, better dimensional tolerances, superior machined surface quality, and improved yields when compared to conventionally produced Dura 17-4PH.

Typical applications

  • Fasteners
  • Flanges
  • Oil field valve equipment
  • Pressure fittings
  • Chemical process equipment
  • Paper mill equipment
  • Aircraft parts


Product forms, available sizes and finishes


Product typeFinishesThicknessWidth
Cold drawn bar hex16,00-16,0016-16
Cold drawn bar round16,00-16,0016-16
Cold drawn bar square16,00-16,0016-16
Forged billet round160,00-200,00160-200
Hot rolled / Black bar round75,00-200,0075-200
Rolled billet round90,00-160,0090-160
Rolled billet square75,00-160,0075-160
Chemical composition


The typical chemical composition for this grade is given in the table below, together with composition limits given for the product according to different standards. The required standard will be fully met as specified on the order.

The chemical composition is given as % by mass.

Typical 0.0215.54.8Cu:3.4 Nb
EN 10088-2 ≤0.07≤1.515.0-17.03.0-5.0≤0.60Cu:3.0-5.0
EN 10088-4 ≤0.07≤1.515.0-17.03.0-5.0≤0.60Cu:3.0-5.0
Mechanical properties



StandardRp0.2Rp1.0RmElongationImpact strengthRockwellHBHV
Product type: Cold rolled coil and sheet
EN 10088-2 ≤ 1275 ≥ 5
Product type: Wire rod


Corrosion resistance


Pitting corrosion resistanceCrevice corrosion resistance

PRE Pitting Resistant Equivalent calculated using the formula: PRE = %Cr + 3.3 x %Mo + 16 x %N
CPT Corrosion Pitting Temperature as measured in the Avesta Cell (ASTM G 150), in a 1M NaCl solution (35,000 ppm or mg/l chloride ions).
CCT Critical Crevice Corrosion Temperature is the critical crevice corrosion temperature which is obtained by laboratory tests according to ASTM G 48 Method F



Physical properties



DensityModulus of elasticityThermal exp. at 100 °CThermal conductivityThermal capacityElectrical resistanceMagnetizable


More detailed information concerning welding procedures can be obtained from the Outokumpu Welding Handbook, available from our sales offices.

Standards & approvals



EN 10088-21.4542
EN 10088-41.4542