Wieland-Werke Ag

Kai Weber

Timo Allmendinger

A copper-nickel-tin alloy with excellent castability, hot workability and cold workability, high resistance to abrasive wear, adhesive wear and fretting wear and improved resistance to corrosion and stress relaxation stability, consisting of (in weight %): 2.0-10.0% Ni, 2.0-10.0% Sn, 0.01-1.0% Fe, 0.01-0.8% Mg, 0.01-2.5% Zn, 0.01-1.5% Si, 0.002-0.45% B, 0.004-0.3% P, selectively up to a maximum of 2.0% Co, selectively up to a maximum of 0.25% Pb, the residue being copper and unavoidable impurities. The ratio Si/B of the element-contents in wt. % of the elements silicon and boron is a minimum 0.4 and a maximum 8 such that the copper-nickel-tin alloy has Si-containing and B-containing phases, phases of the systems Ni&#x2014;Si&#x2014;B, Ni&#x2014;B, Fe&#x2014;B, Ni&#x2014;P, Fe&#x2014;P, Mg&#x2014;P, Ni&#x2014;Si, and Mg&#x2014;Si, and other Fe-containing phases and Mg-containing phases.

Copper-nickel-tin alloy, method for the production and use thereof

A high-strength copper-nickel-tin alloy consisting of (in weight %): 2.0-10.0% Ni, 2.0-10.0% Sn, 0.01-0.8% Mg, 0.01-1.5% Si, 0.002-0.45% B, 0.004-0.3% P, selectively up to a maximum of 2.0% Co, optionally also up to a maximum 2.5% Zn, selectively up to a maximum of 0.25% Pb, the residue being copper and unavoidable impurities, where the ratio Si/B of the element contents in wt. % of the elements silicon and boron is a minimum 0.4 and a maximum 8. The high-strength copper-nickel-tin alloy has Si-containing and B-containing phases and phases of the systems Ni&#x2014;Si&#x2014;B, Ni&#x2014;B, Ni&#x2014;P, Mg&#x2014;P, Ni&#x2014;Si, Mg&#x2014;Si and other Mg-containing phases which significantly improve the processing properties and use properties of the alloy.

A copper-nickel-tin alloy with excellent castability, hot and cold workability, high resistance to abrasive wear, adhesive wear and fretting wear and improved resistance to corrosion and stress relaxation stability, consisting of (in weight %): 2.0-10.0% Ni, 2.0-10.0% Sn, 0.01-1.5% Si, 0.01-1.0% Fe, 0.002-0.45% B, 0.001-0.15% P, selectively up to a maximum of 2.0% Co, optionally also up to a maximum 2.0% Zn, selectively up to a maximum of 0.25% Pb, the residue being copper and unavoidable impurities. The ratio Si/B of the element contents in wt. % of the elements silicon and boron is a minimum 0.4 and a maximum 8 such that the copper-nickel-tin alloy has Si-containing and B-containing phases, phases of the systems Ni&#x2014;Si&#x2014;B, Ni&#x2014;B, Fe&#x2014;B, Ni&#x2014;P, Fe&#x2014;P, Ni&#x2014;Si, and other Fe-containing phases, which improve the processing and use properties of the alloy.

A high-strength copper-nickel-tin alloy with excellent castability, hot workability and cold workability, high resistance to abrasive wear, adhesive wear and fretting wear and improved resistance to corrosion and stress relaxation stability, consisting of (in weight %): 2.0-10.0% Ni, 2.0-10.0% Sn, 0.01-1.5% Si, 0.002-0.45% B, 0.001-0.09% P, selectively up to a maximum of 2.0% Co, optionally also up to a maximum of 2.0% Zn, selectively up to a maximum of 0.25% Pb, the residue being copper and unavoidable impurities. The ratio Si/B of the element contents in wt. % of the elements silicon and boron is a minimum 0.4 and a maximum 8 such that the copper-nickel-tin alloy has Si-containing and B-containing phases and phases of the systems Ni&#x2014;Si&#x2014;B, Ni&#x2014;B, Ni&#x2014;P and Ni&#x2014;Si, which significantly improve the processing properties and use properties of the alloy.

Copper-nickel-tin alloy, method for the production thereof and use thereof

The invention relates to a high-strength as-cast copper alloy containing tin, with excellent hot-workability and cold-workability properties, high resistance to abrasive wear, adhesive wear and fretting wear, and improved corrosion resistance and stress relaxation resistance, consisting (in wt. %) of: 4.0 to 23.0% Sn, 0.05 to 2.0% Si, 0.005 to 0.6 B, 0.001 to 0.08% P, optionally up to a maximum of 2.0% Zn, optionally up to a maximum of 0.6% Fe, optionally up to a maximum of 0.5% Mg, optionally up to a maximum of 0.25% Pb, with the remainder being copper and inevitable impurities, characterised in that the ratio of Si/B of the element content of the elements silicon and boron lies between 0.3 and 10. The invention also relates to a casting variant and a further-processed variant of the tin-containing copper alloy, a production method, and the use of the alloy.

Copper alloy containing tin, method for producing same, and use of same

A copper-nickel-tin alloy with excellent castability, hot and cold workability, high resistance to abrasive wear, adhesive wear and fretting wear and improved resistance to corrosion and stress relaxation stability, consisting of (in weight %): 2.0-10.0% Ni, 2.0-10.0% Sn, 0.01-1.0% Fe, 0.01-0.8.% Mg, 0.01-1.5% Si, 0.002-0.45% B, 0.004-0.3% P, selectively up to a maximum of 2.0% Co, selectively up to a maximum of 0.25% Pb, the residue being copper and unavoidable impurities. The ratio Si/B of the element contents in wt. % of the elements silicon and boron is a minimum 0.4 and a maximum 8 such that the copper-nickel-tin alloy has Si-containing and B-containing phases and phases of the systems Ni&#x2014;Si&#x2014;B, Ni&#x2014;B, Fe&#x2014;B, Ni&#x2014;P, Fe&#x2014;P, Mg&#x2014;P, Ni&#x2014;Si, Mg&#x2014;Si and other Fe-containing phases and Mg-containing phases which improve the processing and use properties of the alloy.

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Bellenberg, Germany

Kai Weber