Warman Pump Material Codes and Descriptions

A03
Nickel Hard 1 - Martensitic White Iron
Alloy A03 is a martensitic white iron that provides reasonable performance under mildly corrosive working conditions and operates at low impact levels. It is typically heat treated to reduce or eliminate residual austenite in the matrix. This alloy is sensitive to slice thickness, and the composition must be adjusted to prevent the formation of undesirable phases.
A04
ULTRACHROME - 24% Cr Corrosion-Resistant White Iron
Alloy A04 is a white iron with a hardness of 375 BHN in the annealed condition. This low hardness makes A04 easier to machine than Alloy A05. The alloy can subsequently be hardened to increase wear resistance. A04 is not as corrosion-resistant as A05 and A12 and is typically not corrosion-resistant.
A05
ULTRACHROME - 27% Cr Corrosion-Resistant White Iron
Alloy A05 is a wear-resistant white iron with excellent performance under corrosive conditions. This alloy can be effectively used for various types of slurries. The high wear resistance of Alloy A05 is provided by the hard carbides present in its microstructure. Alloy A05 is particularly suitable for applications requiring corrosion resistance and erosion resistance.
A06
Nickel-Hard 4 Martensitic White Iron
Martensitic wear-resistant alloy
A07
15/3 Chromium/Molybdenum Iron - Chromium/Molybdenum
Martensitic white iron with slow erosion resistance
A12
HYPERCHROME - 30% Chromium Hyper-eutectic Chromium White Iron
HYPERCHROME alloy is a hypereutectic white iron suitable for high wear resistance, where corrosion is not a concern. It should be used in applications where A05 and A03 cannot provide sufficient wear life. Alloy A12 can be used in mild alkaline slurries with a pH value between 8 and 14. In some severe applications, the alloy may provide up to three times the wear life of A05 and A03 parts.
A25
Nickel-Chromium-Molybdenum Steel - Cast Steel
Alloy A25 is an alloy steel with moderate wear resistance and high mechanical properties. This alloy is used for large castings where toughness is critical.
A49
ULTRACHROME - 28% Chromium, Low Carbon, High Chromium, Low Carbon White Iron
Alloy A49 is a corrosion-resistant white iron suitable for low pH corrosion where corrosive wear is also an issue. This alloy is particularly suitable for flue gas desulfurization (FGD) and other corrosive applications where the pH is below 4. It can also be used in other mildly acidic environments. A49 has corrosion resistance similar to Ni-Hard 1.
A51
ULTRACHROME - 36% Cr, erosion/corrosion white iron, low C ULTRACHROME
A51 is a high-quality erosion/corrosion alloy suitable for applications requiring excellent corrosion resistance and erosion resistance. Compared to alloy A49, this alloy offers significantly improved corrosion resistance, with erosion resistance similar to nickel-hard alloy iron. This alloy is suitable for phosphoric acid loads, FGD loads, sulfuric acid, and other moderately corrosive applications.
C02
Nickel corrosion inhibitor (copper-free) corrosion-resistant cast iron
C21
13% chromium steel - martensitic stainless steel
C23
316-type stainless steel - austenitic stainless steel
C25
Alloy 20 - austenitic stainless steel
C26
26Cr5Ni stainless steel (CD-4M Cu) - duplex stainless steel
C27
'825' Alloy - Austenitic Corrosion-Resistant Alloy
C30
27Cr 31 Ni Stainless Steel - Austenitic Stainless Steel
C44
440C Stainless Steel - Hardened Stainless Steel
C55
Ferralium255 - Duplex Austenitic/Ferritic Stainless Steel
D21
Ductile Iron (SG Iron) - Cast Iron
Alloy D21 is a ductile grade gray cast iron, requiring higher physical properties and greater impact resistance compared to G01.
G01
Cast iron - Cast iron
Standard gray iron
N02
63Ni30Cu alloy - Corrosion-resistant alloy

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