Inquiry (采购产品): RFQ Hi, Please quote for the below enquiry Forged, Annealed and Machined Invar 36 Material The Tolerance on specified material size are : + 0.5 mm & 0.00 mm as per enclosure Sl. No. Description Qty 1. Blank diameter 430mm x 060mm thick 04 pcs. 2. Blank diameter 430mm x 050mm thick 04 pcs. 3. Blank diameter 180mm x 095mm thick 04 pcs. 4. Blank diameter 165mm x 010mm thick 14 pcs. 5. Blank diameter 400mm x 025mm thick 04 pcs. 6. Bar diameter 160mm x 340mm long 02 pcs. 7. Bar diameter 130mm x 250mm long 03 pcs. 8. Bar diameter 115mm x 210mm long 05 pcs. 9. Bar diameter 070mm x 210mm long 08 pcs. 10. Plate 495mm x 435mm x 016mm thick 04 pcs. 11. Plate 440mm x 440mm x 016mm thick 04 pcs. 12. Plate 430mm x 430mm x 016mm thick 04 pcs. 13. Plate 025mm x 050mm x 100mm long 10 pcs. Technical Specifications of the Invar 36 Material Chemical Composition (%) Carbon : 0.05 Max. Manganese : 0.30 Max. Silicon : 0.25 Max. Nickel : 36.0 ± 0.5 Heat treated to obtain the following Mechanical Properties Modulus of Elasticity " E " (G Pa): ≈ 145 Poisons Ratio " v": ≈ 0.3 Specific Weight " ρ" (kg m-3 x 103) : ≈ 8.0 % Elongation (50mm) : 40 Min. Yield Strength (M Pa) ( @ 0.2% Hysteresis) : ≈ 300 Ultimate Tensile Strength ( UTS ) ( M Pa) : ≈ 500 Hardness : 130 BHN Thermal Conductivity (W m-1 K-1) : ≈ 12.6 Coefficient of Thermal Expansion "a" (K-1) : ≈ 1.6 X 10-6 to 2.0 x 10-6 ( 0 to 100 degree centigrade ). Notes: Since the stability of Coefficient of Thermal Expansion is the most important parameter, the supplier should ensure that the "CARBON " should be in the solution form and not in the precipitate form which necessitates that the plates & rods should be supplied in the water quenched (830 degree Centigrade) form, followed by air cooling (from 315 degree Centigrade) & stabilization at 95 degree centigrade for 48 hours As the raw material during the manufacturing will undergo pre- machining, Welding, final machining etc., and the property of Coefficient of Thermal Expansion being the most important parameter, the supplier should specify preferred heat treatment at various stages of manufacturing of product forgetting a stable Coefficient of Thermal Expansion of the final product. Properties from 1 to 7 are in annealed condition. -- Thanks and Regards Christopher Elisha Umac Avionics Pte. Ltd. 53 Lengkong Empat, 02-06 Escada View, Singapore 417657 HP 82339813 Fax 64021175 Chris@umacavionics.com Chris.elisha@gmail.com **** Hidden Message ***** Chris Elisha 417657 SGP Company: umac E-mail: chris@umacavionics.com **** Hidden Message ***** chris@umacavionics.com
