CuSn10-C · tin bronze
Bronze with 10% tin. Higher strength and wear resistance than Rg5; being lead-free, it is used for seawater and drinking water fittings, bushings and seat rings.
- Rp0.2 · MPa
- ≥ 130
- Rm · MPa
- ≥ 250
- TEMPERATURE
- −10 … +180 °C
- COST
Chemical composition
The values in this section are being verified.
Mechanical properties
| STANDARD · CONDITION | Rp0.2 MPa | Rp1.0 MPa | Rm MPa | A % | KV J |
|---|---|---|---|---|---|
| EN 1982 · sand casting (GS) | 130 | — | ≥ 250 | 18 | 70 HB |
| EN 1982 · continuous casting (GC) | 170 | — | ≥ 280 | 10 | 80 HB |
Minimum values by casting method. The last column is Brinell hardness.
Service temperature
Same family as CC491K (tin bronze). Pressure rating drops above 120 °C.
This is the limit of the material itself. A valve's service temperature is usually set by the seal and seat materials; product pages give it for each seal option.
Media suitability GENERAL TREND
Emsal assessment. The final choice is made from corrosion tables, taking concentration, temperature, chloride content and flow velocity into account.
Strengths and weaknesses
Strengths
- Good corrosion and erosion resistance in seawater
- High wear resistance: bushings and seats
- Lead-free
Weaknesses
- More expensive and harder to machine than Rg5
- Risk of stress corrosion in ammonia and caustics
Manufacturing and use
- ECONOMY
- High; depends on the tin price.
- MANUFACTURING METHODS
- Sand casting · Centrifugal casting · Continuous cast bar
- TYPICAL VALVE PARTS
- Body (small sizes) · Seat ring · Bushing · Disc
Used in 4 Emsal products
- 001Wafer check valveBody · Disc
- 005Short pattern swing check valveBody · Disc
- 070Flanged 2-piece ball valveBody · Bonnet
- 903Mounting bracketBody
Source: EN 1982. Values compiled and verified by Emsal Vana; for binding values, refer to the current edition of the standard and the material certificate.