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C87800 Self-Lubricating Bushings
Buy C87800 Self-Lubricating Bushings: High-Strength, Corrosion-Resistant Silicon Bronze for Marine Applications
When engineering managers search to buy C87800 self-lubricating bushings, they’re targeting a proven silicon bronze alloy (equivalent to CuSi3Mn1, CAC803, SzBC3) engineered for demanding corrosive environments. Compliant with ASTM B584/B176 standards for sand and die castings, this alloy excels in medium-to-high loads (<40 MPa) with superior wear resistance and low friction (coefficient 0.15-0.20). Available in cast formats—with graphite (embedded for enhanced self-lubrication) or without graphite (pure alloy for versatile machining)—it solves friction and wear challenges for OEMs in marine and pump-valve sectors. Opting to buy C87800 self-lubricating bushings boosts durability by 30%+ and reduces total cost of ownership (TCO), making it ideal for seawater bearings, valve components, and rail guides.
Consolidated Technical Specifications for C87800 Silicon Bronze
This streamlined table summarizes essential chemical, mechanical, physical, and other properties (as-cast die-cast temper M04; per ASTM B584/CDA). Ideal for quick procurement reviews.
| Category | Property/Element | Value/Range | Units/Notes |
|---|---|---|---|
| Chemical Composition (% wt) | Copper (Cu) | 80.0 min (Balance) | Cu + elements ≥99.5%; core strength |
| Silicon (Si) | 3.8–4.2 | Boosts castability, strength, corrosion resistance | |
| Zinc (Zn) | 12.0–16.0 | Enhances brackish water/salt spray protection | |
| Manganese (Mn) | ≤0.01 | Deoxidation aid; purity focus | |
| Lead (Pb) | ≤0.09 | Lead-free compliant | |
| Tin (Sn) | ≤0.25 | Prevents brittleness | |
| Iron (Fe) | ≤0.15 | Impurity control; weld limits | |
| Nickel (Ni) | ≤0.20 (incl. Co) | Strength support | |
| Aluminum (Al) | ≤0.20 | Maintains machinability | |
| Other (P, As, Mg, S, Sb) | ≤0.15 each | Alloy stability traces | |
| Mechanical Properties (Room Temp) | Tensile Strength | ≥85 ksi (≥586 MPa) | Suits <40 MPa loads in pumps/valves |
| Yield Strength (0.2% Offset) | 50 ksi (345 MPa) typical | Deformation resistance | |
| Elongation | ≥20% (25% typical) | Ductility for forming/impact (2″ gauge) | |
| Hardness (RB / HB equiv.) | 85 RB (~150–170 HB) | Wear resistance for self-lube | |
| Charpy V-Notch Impact | 70 ft-lbs typical | Marine toughness | |
| Physical Properties (68°F/20°C) | Density | 0.30 lb/in³ (8.3 g/cm³) | SG 8.3; robust/lightweight |
| Melting Range | 1510–1680°F (821–916°C) | Fluid casting | |
| Thermal Conductivity | 16 Btu·ft/(hr·ft²·°F) | Heat dissipation | |
| Electrical Conductivity | 6.7% IACS | Non-electrical marine use | |
| Modulus of Elasticity (Tension) | 20,000 ksi (138 GPa) | Valve/impeller stiffness | |
| Thermal Expansion Coeff. | 10.9 × 10⁻⁶ /°F (68–572°F) | Temp-stable | |
| Additional Attributes | Corrosion Resistance | Excellent (brackish water, acids, salt spray) | +25–40% lifespan vs. brasses; marine key |
| Machinability | 40 (good) | Custom graphite forms | |
| Casting | High yield/fluidity; 3/16 in/in shrinkage | Mold/die efficient; batch economical | |
| Weldability | Good (40 rating) | 150°F preheat TIG; valve fit | |
| Friction/Wear | 0.15–0.20 coeff. | Graphite self-lube; 50% maintenance cut |
Material Selection Comparison
To buy C87800 self-lubricating bushings is to choose superior corrosion and machinability over standard brasses, especially for marine demands. This table contrasts C87800 with alternatives like C87300, emphasizing metrics that drive procurement decisions for self-lubricating solutions.
| Material Property | C87800 (Silicon Bronze) | C87300 (Silicon Bronze) | Advantage Analysis (for Self-Lubricating Bushings) |
|---|---|---|---|
| Chemical Composition | Cu 80-82%, Si 3.8-4.2%, Zn 12-16%, Mn ≤1% | Cu 87-91%, Si 2.8-3.5%, Zn 4-6% | Higher Zn in C87800 bolsters brackish water resistance; Si aids casting for seamless with graphite integration when you buy C87800 self-lubricating bushings. |
| Tensile Strength | ≥550 MPa | ≥450 MPa | Elevated strength handles pump-valve loads, preventing failures—key reason to buy C87800 self-lubricating bushings. |
| Hardness (HB) | ≥390 | ≥200 | Exceptional wear resistance drops friction to 0.15-0.20, making buy C87800 self-lubricating bushings ideal for marine setups. |
| Corrosion Resistance | Withstands brackish water, acids, salt spray; +25-40% lifespan | Solid but weakens in chemicals | Tailored for corrosion resistant needs, minimizing maintenance—prime for those ready to buy C87800 self-lubricating bushings. |
| Self-Lubricating Forms | With/without graphite; weld/machining ease | Standard; rating 30 | Flexible casting supports oil-free use with high yields, outperforming aluminum bronze economically when buying in bulk. |
| Application Scenarios | Impellers, valves, seawater bearings | Basic hardware | Focuses on high-strength silicon brass for valves, accelerating decisions to buy C87800 self-lubricating bushings. |
Based on ASTM B584/JIS CAC803. Test samples before bulk buys to confirm fit.
Common Failures and Solutions
Buy C87800 self-lubricating bushings for proven reliability, but proactive fixes for issues like corrosion downtime build trust. This list targets engineering pain points with actionable steps.
- Failure 1: Corrosion Downtime in Brackish WaterCause: Salt/chemical exposure rusts lesser alloys. Solution: Select with graphite C87800 for Si-barrier protection; aim for pH <7, gaining 40% longer life via ASTM salt spray tests—ideal when you buy C87800 self-lubricating bushings.
- Failure 2: Friction Wear Under Medium LoadsCause: Rough surfaces spike coefficients >0.20 sans lubrication. Solution: Go without graphite for low-speed or with graphite for self-lube (to 0.15); finish at Ra ≤1.6μm for 20%+ elongation. Oil-free design saves coating expenses post-purchase.
- Failure 3: Welding/Install Mismatches in Batch RunsCause: Brittle joints from incompatible materials. Solution: Exploit rating-40 weldability with 150°C preheat TIG; custom sizes fit rail bushings. JIS CAC803 certifies seamless global integration after you buy C87800 self-lubricating bushings.
- Failure 4: Elevated Maintenance Expenses (2-3x Yearly)Cause: Coatings for conventional bushings add up. Solution: Buy C87800 self-lubricating bushings for hands-off operation; 200+ piece orders trim TCO 30%. Download free PDF specs to validate.
Drawn from OEM insights, these ensure buy C87800 self-lubricating bushings deliver on “silicon bronze bushing self-lubricating” promises.
Customer Case Studies
These anonymized OEM stories highlight why buyers choose to buy C87800 self-lubricating bushings, tracing from search to scalable wins.
- Case 1: U.S. East Coast Pump-Valve OEM Tackles Seawater Corrosion Facing brackish downtime, a $200K-budget firm queried “C87800 bushings for pumps” and bought with graphite C87800 rail bushings. Lifespan jumped from 6 to 18 months, maintenance halved. Outcome: 35% efficiency boost, 500-unit follow-up order. Driver: High-strength silicon brass for marine reliability.
- Case 2: Japanese Valve Maker Enhances Chemical Flow Parts A procurement lead sought “buy silicon bronze self-lubricating bushings” amid wear issues. Without graphite C87800 (JIS CAC803) valve integrations cut friction 20%, welds flawless. Outcome: 25% TCO drop, 2025 electrical expansions. Intent: Maintenance reduction via ASTM B584 verification.
- Case 3: Southeast China OEM Bolsters Gear Bearings An engineer hunting “corrosion resistant bushings” for 35 MPa loads bought with graphite C87800 tool bearings. ≥390 HB hardness curbed wear. Outcome: 30% durability gain, 2-week sample-to-$150K order. Motivation: Casting ease for marine/pump needs.
Proven for “self-lubricating C87800 for valves,” buying C87800 self-lubricating bushings fuels efficiency.
FAQ: Frequently Asked Questions
Q1: Why buy C87800 self-lubricating bushings over C87300 for corrosion? A: C87800’s Zn/Si mix extends salt spray life 25%, suiting marine bearings; C87300 suits basics but falters chemically—check the table.
Q2: With graphite or without when buying C87800 self-lubricating bushings? A: Graphite for friction-heavy (0.15 coefficient), without for weld-focused low-speed; both <40 MPa—test samples.
Q3: How to buy C87800 self-lubricating bushings? A: Use “C87800 supplier” for quotes, custom/ASTM-JIS options. 200+ bulk gets global shipping; free PDFs ready.
Q4: Best environments for buy C87800 self-lubricating bushings? A: Chemical/humid like impellers/valves, brackish-proof; avoid >40 MPa extremes.
Ready to buy C87800 self-lubricating bushings? Claim free samples/quotes to transform your marine/pump-valve ops! Reach out for silicon bronze excellence.
