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Dear Miss /Sir, We have requirement of following: 1) Niobium Sheets & Rods 2) Tantalum Sheets & Rods 3) C-103 (Nb-10 Hf-1Ti Alloy) Sheets 4) Ta-2.5W Sheets Detailed requirement & Specifications are attached herewith. Please Quote your lowest CIF Mumbai Airport prices. We hope you will keep your quote valid for 90 days. Enquiry for Niobium & Tantalum Sheets & Rods Sr.No. Description Qty (Kgs) 1 Niobium Sheet 3 mm thick,2 Nos. 13 2 Niobium Rod,25 mm dia,2 Nos. 11 3 Tantalum Sheet,3 mm thick,1 No. 13 4 Tantalum Rod,25mm dia,3 Nos. 15 5 C-103(Nb-10 HF-1Ti Alloy)sheet,3 mm thick,2 Nos. 13 6 Ta-2.5W Sheet,3mm thick,1 No. 10 7 Ta-2.5 W sheet,10 mm thick,1 No. 10 Specifications: 1) Niobium Rod & Sheet cold rolled annealed condition (90% minimum recrystallised,Nb Metal of >99.5% Purity) Sheet: Chemical requirement as per ASTM B393-99 ,RO4210 Grade Rod: Chemical requirement as per ASTM B393-99 ,RO4210 Grade Impurity content?for rod & Sheet) C < 0.015 O < 0.04 N < 0.01 < 0.0015 Fe < 0.01 Mo < 0.02 Ta:0.3 Ni < 0.005 Si < 0.0005 Ti < 0.03 W < 0.05 Al < 0.005 Zr < 0.02 Hf < 0.02 Size: Sheet : 500 mm ± 50 mm x 500 mm ± 50 mm x 3 mm ± 0.5 mm Rod : Diameter : 25 mm ± 2 mm x Length:600 mm ± 60 mm Mechanical Properties 1) Niobium Sheet (size;3 mm) Brinell Hardness (Max.Average) Ultimate Tensile Strength(MPa) Yield Strength 0.2% Offset,Minimum(MPa) Elongation in 1 “ Gauge length,Minimum % 125 125 73 20 2) Tantalum Rod & Sheet cold rolled annealed condition (90% minimum recrystallised,Ta Metal > 99.75% Purity) Sheet: Chemical Requirement as per ASTM B708-01,R05200 Grade Rod: Chemical Requirement as per ASTM B365-98,R05200 Grade Impurity Content: C < 0.02 O < 0.025 N < 0.01 H < 0.0015 Fe < 0.01 Mo < 0.02 Nb < 0.100 Ni < 0.010 Si < 0.005 Ti < 0.010 W < 0.05 Size: Sheet : 500 mm ± 50 mm x 500 mm ± 50 mm x 3 mm ± 0.5 mm Rod : Diameter : 25 mm ± 2 mm x Length:600 mm ± 60 mm Mechanical Properties Tantalum Sheet (3 mm thick) Ultimate Tensile Strength Minimum(Mpa) Yioeld Stremgth 0.2% offset,Minimum Elongation in 1 inch gauge length,Minimum % 172 103 30 3) c-103 (Nb-10 Hf-1Ti Alloy) sheet cold rolled annealed condition 90% minimum recrystallised Chemical requirement as per ASTM B654-03 ,R04295 Grade Maximum impurity content given below except where ever otherwise specified) C 0.015 Max N 0.010 Max Oxygen 0.025 max Hydrogen 0.0015 Max Zirconium 0.7 max Tantalum 0.5 max Tungsten 0.5 max Hafnium 0.5 max Titanium 07-1.3 Niobium by difference Size: Sheet: 500 mm ± 50 mm x 500 mm ± 50 mm x 3 mm ± 0.5 mm Mechanical Properties Ultimate Tensile Strength Min.(MPa) Yield Strength 0.2% offset,Min.(MPa) Elongation in 1inch gauge length,Min.(%) 372 262 20 4) Ta-2.5 W Sheet cold rolled annealed condition 90% minimum recrystallised Chemical requirement as per ASTM B 708-01,R05252 GRADE Maximum impurity content given below except where ever otherwise specified Carbon 0.020 Max Oxygen 0.025 max Nitrogen 0.010 max Hydrogen 0.0015 max Iron 0.010 max Moly 0.020 max Niobium 0.50 max Nickel 0.010 max Silicon 0.005 max Titanium 0.010 max Tungsten 2.0-3.5 Tantalum: remainder Size: Sheet : 400 mm ± 40 mm x 500 mm ± 50 mm x 3 mm ± 0.5 mm Size: Sheet : 200 mm ± 20 mm x 300 mm ± 30 mm x 10 mm ± 0.5 mm Mechanical Properties(3 mm sheet) Ultimate Tensile Strength,Min.(MPa) Yield Strength 0.2% Offset,Min.(MPa) Elongation in 1 inch Gauge length,Min.% 276 207 20 Acceptance Criteria 1. The materials supplied shall confirm to the requirements for chemical composition and mechanical properties as prescribed in Annexure-II 2. A certificate of chemical composition & mechanical properties of the materials shall be furnished along with supplies. 3. Material supplied shall meet the dimension requirements with respect to length, width & thickness as specified in Annexure-Ii 4. Material will be tested at Works, Hyderabad for its chemical composition and mechanical properties and accepted based on these reports.
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