Super Austenitic 904L Chemical Resistant Pump Casing Castings

Super Austenitic 904L Pump Casing Castings: Premium high-alloy super austenitic stainless steel castings with superior resistance to strong acid, chloride and organic chemical corrosion, customized for chemical pump housing in harsh corrosive fluid transportation.

Product

904L Super Austenitic Pump Casing Castings

MOQ

1 piece

Model NO

OEM Customized

Size

Manufactured according to customer drawings & pump specifications

Machining Tolerance

±0.01mm

Material

Super Austenitic Stainless Steel 904L (UNS N08904)

Application

Fine chemical industry, pharmaceutical plant, acid pickling workshop, wastewater treatment, mineral processing

Surface Treatment

Solution annealing, pickling & passivation, precision machining

Manufacturing Process

Investment Casting / Sand Casting, Solution Heat Treatment, Finish Machining

Factory

Professional high-alloy stainless steel foundry

After-sales Service

24-hour online technical support

Warranty

Quality guaranteed

Certification

ISO 9001, CE

Standard

ASTM A494, ASME, DIN, GB

Inspection

PMI material test, UT/RT NDT, hardness test, metallographic inspection, strong acid immersion corrosion test

Application Scope

Centrifugal pump casing, chemical process pump housing, corrosion-resistant pump body for transporting sulfuric acid, phosphoric acid, mixed acid and chloride-containing wastewater

Delivery Time

20–42 working days, negotiable

Transport Package

Seaworthy wooden case + steel frame, moisture-proof, rust-proof and anti-collision packaging

Advantages

Outstanding strong acid & chloride corrosion resistance, excellent anti-pitting & crevice corrosion, stable pressure-bearing performance, long service life under continuous chemical medium erosion

C ≤0.02, Cr:19.0~23.0, Ni:23.0~28.0, Mo:4.0~5.0, Cu:1.0~2.0, Mn ≤2.0, Si ≤1.0, S ≤0.035, P ≤0.045

• High nickel-molybdenum-copper alloy design, outstanding durability in hot concentrated sulfuric acid, phosphoric acid and mixed acidic medium where ordinary 316L fails rapidly
• Exceptional resistance to chloride-induced pitting, crevice corrosion and intergranular corrosion
• Stable austenitic microstructure after full solution treatment, no sensitization during pump long-time alternating temperature operation
• Compact casting structure with few internal defects, reliable hydraulic tightness for high-pressure chemical delivery
• Good cavitation resistance, suitable for pump working conditions with solid particle contained corrosive medium

Horizontal centrifugal pump casings, vertical chemical pump bodies, self-priming pump housings, custom non-standard pump casing castings per pump design drawings.

1. Mature casting & solution heat treatment technology specialized for super austenitic 904L alloy
2. Strict composition control to guarantee consistent anti-corrosion property of finished pump casings
3. Rich cooperation experience with global chemical equipment manufacturers
4. Stable bulk supply for chemical engineering and environmental protection projects