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Corrosion Resistant Solid Bar Hastelloy C4 Dia 30mm for Fertilizer Impeller
Engineered for severe fertilizer manufacturing environments, this Dia 30mm precision machined Hastelloy C4 solid bar provides unmatched metallurgical stability and resistance to aggressive phosphoric and sulfuric acids.
- Overview
- Specifications
- Features
- Applications
- Why-Us
- FAQ
- Recommended Products
Overview
Fertilizer production facilities operate under some of the most aggressive corrosion-abrasion dual environments in modern process industries. The pump impeller is the core hydraulic component subjected to violent turbulent flow, cavitation risks, suspended solid particles, and concentrated mineral acids.
Our Dia 30mm Hastelloy C4 solid bar is engineered to overcome these exact failure points. With balanced chromium (16%) and molybdenum (16%) content stabilized by titanium, Hastelloy C4 exhibits outstanding resistance to high-temperature sensitization and grain boundary precipitation between 650 deg C and 1040 deg C. This microstructural integrity ensures that forged and machined impeller hubs, shafts, and vanes retain maximum ductility and corrosion resistance even after hot working or heavy welding processes.
Technical Specifications and Parameter Matrix
| Parameter | Standard Value / Specification Range |
|---|---|
| Material Grade | Hastelloy C4 / Nickel-Chromium-Molybdenum Alloy |
| Diameter | Dia 30.00 mm (Custom diameters available from 6.0 mm to 350.0 mm) |
| Diameter Tolerance | Precision class h8 / h9 (down to +/- 0.02 mm) |
| Length Range | 1000 mm to 6000 mm (Precision cut-to-length and custom shaft lengths available) |
| Delivery Condition | Solution Annealed, Precision Turned, Centerless Ground, Polished |
| Surface Roughness (Ra) | Ra <= 0.40 um - 0.80 um |
| Straightness Tolerance | <= 0.50 mm per meter |
| Density | 8.64 g/cm³ |
| Melting Point | 1335°C to 1380°C |
| Tensile Strength (Rm) | >= 690 MPa |
| Yield Strength (0.2% Offset) | >= 280 MPa |
| Elongation (A50mm) | >= 40% |
| Hardness | <= 100 HRB (Uniform through-cross-section hardness) |
| Non-Destructive Testing | 100% Ultrasonic Testing (UT Defect-Free Class) & Liquid Penetrant Testing (PT) |
Key Features
Hastelloy C4 Solid Bar Wet Phosphoric & Mixed Acid Resistance
Balanced 16% Cr and 16% Mo matrix provides exceptional resistance to hot concentrated phosphoric acid, sulfuric acid, and abrasive gypsum slurries, preventing localized pitting and crevice corrosion.
Dia 30mm Hastelloy C4 Bar Titanium-Stabilized Thermal Integrity
Dedicated titanium micro-stabilization prevents intergranular precipitation between 650°C and 1040°C, ensuring impeller hubs and welded vanes retain full ductility and corrosion resistance.
Precision Machined Hastelloy C4 Solid Bar Tight Tolerance & Ra ≤ 0.40 µm Finish
Centerless ground to precision h8/h9 diameter tolerance with smooth Ra ≤ 0.40 µm finish and strict straightness, significantly reducing pre-machining time and dynamic balancing costs.
High Purity Nickel Alloy Clean Microstructure for High-RPM Balance
Secondary electroslag remelting (ESR) eliminates internal porosity and inclusions, guaranteeing uniform mass distribution and vibration-free operation at high pump rotational speeds.
Industrial Applications
Precision Machined Hastelloy C4 Solid Bar in Wet-Process Phosphoric Acid (WPA) Slurry Pumps
Serves as critical impeller vanes, central hubs, and drive shafts in crude phosphoric acid circulation pumps handling active fluorides, sulfuric acid, and abrasive gypsum crystal suspensions.
Hastelloy C4 Dia 30mm Bar in NPK Granulation and Ammonium Phosphate Agitator Impellers
Applied in chemical mixing tanks and high-temperature fertilizer reactor impellers exposed to violent turbulent flow, high shear stresses, and aggressive nitrate-phosphate solutions.
Precision Machined Solid Bar in Flue Gas Desulfurization (FGD) and Acid Circulation Systems
Utilized in slurry recirculation pump shafts, spray nozzle headers, and mist eliminator drive components operating in high-chloride, low-pH scrubbing liquor.
Hastelloy C4 Alloy Rods in Concentrated Sulfuric and Nitric Acid Dosing Equipment
Engineered for chemical metering pump shafts, valve trim, and high-pressure chemical injection fittings requiring zero-leakage durability against violent exothermic acid reactions.
Why Choose DLX for Hastelloy C4 Solid Bars
Integrated Vacuum Induction and ESR Refining Technology
In-house VIM, ESR refining, and radial forging ensure ultra-high chemical purity, low gas content, and consistent batch-to-batch repeatability.
High-Precision Centerless Grinding and Custom Impeller Pre-Machining
Equipped with CNC lathes and grinding lines to supply Dia 30mm bars, stepped shafts, or pre-turned impeller blanks ready for immediate assembly.
Consolidated Monthly Production Capacity and Dynamic Project MOQ
Backed by a 1,200 tons/month unified capacity, DLX offers flexible, drawing-tailored MOQs for rapid prototyping through large-scale plant replenishment.
Comprehensive Multi-Stage Quality Assurance and Defect-Free Testing
Every batch is verified via spectrum analysis, tensile and corrosion tests, and 100% full-length ultrasonic flaw detection before dispatch.
Product FAQ
Why is Hastelloy C4 solid bar preferred over Hastelloy C276 for high-temperature fertilizer pump impellers?
While both grades offer outstanding general corrosion resistance, Hastelloy C4 features dedicated titanium stabilization and optimized molybdenum-chromium ratios that eliminate tungsten and minimize carbon/silicon content. This guarantees superior microstructural stability and prevents intergranular corrosion during welding, stress relieving, or sustained operation in the 650°C to 1040°C temperature range.
What precision tolerances and surface finishes can be achieved on Dia 30mm solid bars?
Through high-precision centerless grinding, standard diametrical tolerance is held within h8/h9, with custom CNC tolerances achievable down to +/- 0.02 mm. Surface roughness is consistently controlled within Ra 0.40 um to 0.80 um, ensuring smooth seal fitting and minimal friction on dynamic pump packings.
Can DLX supply pre-machined impeller blanks and custom shaft lengths?
Yes. DLX offers precision saw cutting, center hole drilling, step turning, chamfering, and custom threading according to your engineering drawings, helping pump manufacturers reduce machining cycles and raw material scrap rates.
What quality verification certificates are provided with each shipment?
Every shipment includes a comprehensive Manufacturer Quality Certificate detailing verified heat-specific chemical composition, heat treatment parameters, mechanical tensile and yield strength, elongation, through-section hardness, and 100% ultrasonic testing results.
What export packaging standards are used to ensure safe ocean transit?
Each solid bar is coated with heavy-duty anti-corrosion protective oil, wrapped in multi-layer moisture-proof barrier film, encased in protective plastic sleeves, and secured in steel-strapped reinforced export wooden crates to eliminate transit vibration, bending, and moisture damage.
