Sand Casting, Investment Casting and Die Casting in China

CD4MCu-Duplex Stainless Steel-Casting Material

CD4MCu is a Fe-Cr-Ni-Mo , with greater corrosive resistance than standard 18-8 Cr-Ni and 18-14-2/18-14-3 Cr-Ni-Mo stainless steel parts.

Casting Material Standard: ASTM A890 Grade 1A; Type 25Cr-5Ni-Mo-Cu; UNS J93370; ACI CD4MCu; Z3CNUD26·05M; SS2605

Casting Process: sand casting or precision investment casting

Chemical requirements:

Carbon, max 0.04;
Manganese, max 1.00
Silicon, max 1.00
Phosphorus, max 0.04
Sulfur, max 0.04
Chromium 24.5-26.5
Nichel 4.75-6.0
Molybdenum 1.17-2.25
Coper 2.75-3.25

CD4MCu Duplex Stainless Steel Casting

CD4MCu Duplex Stainless Steel Casting

Tensile Requirements:

Tensile Strength, min100ksi [690Mpa]; Yield strength, min 70Ksi [485Mpa]; Elongation 16%

Heat treatment process: Heat to 1900°F [1040°C] minimum, hold for sufficient time to heat casting uniformly to temperature, quench in water or rapid cool by other means.

Hardness: HB300

CD4MCu is widely used in pump industry, especially in abrasive applications, such as pump casing and pump impeller. And CDM4Cu won’t pit like regular stainless steel, has a better stress/corrosive cracking resistance than standard stainless, and higher strength than standard stainless steel. And compared with regular cast iron material, it is much more resistant to corrosion and much stronger.

CD4MCu BENEFITS

  • Corrosion and pitting resistance
  • Better for abrasive applications
  • Higher strength than standard stainless steel
  • Improved ductility and weld-ability

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Sand Casting, Investment Casting and Die Casting in China