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Lawrence Berkeley National Laboratory requests a proposal for Bi-2212 superconducting magnet wire. LBNL intends to acquire two or three 10 kg billets of wire with the following specifications: • Bare ... Lawrence Berkeley National Laboratory requests a proposal for Bi-2212 superconducting magnet wire. LBNL intends to acquire two or three 10 kg billets of wire with the following specifications: • Bare wire diameter: 1.0 mm nominal, with an option of being further drawn to 0.8 mm • Powder: Bi-2212 “521” composition (reference: EngiMat powder LXB-52) • Outer sheath: Ag-Mg 0.2 wt% • Inner sheath: pure Ag • HTS fill factor: 23% ± 5% nominal • Stacking design configuration: 37 x 18 • No twisting • Intermediate annealing optional • Minimum piece-length > 50m Please see the attached RFP and supplemental documents for details.