ALLOY 825 DATA SHEET JacquetMetalService

Alloy 825 Data Sheet Jacquetmetalservice-Free PDF

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Product form Specifications,ASTM ASME DIN VdT V BS. Sheet and plate B424 SB424 17750 432 1 3072,Strip B424 SB424 17750 432 1 3073. Smls Pipe and Tubing B423 SB423 17751 432 2 3074,Welded Pipe and Tubing B163 SB163. Rod Bar B425 SB425 17752 432 3 3076,Forgings 17754 432 3. Chemical composition,C Mn S Si Cr Ni Fe Mo Cu Ti Al.
0 05 max 1 00 max 0 03 max 0 50 max 19 5 23 5 38 46 22 min 2 5 3 5 1 5 3 0 6 1 2 0 2 max. MECHANICAL PROPERTIES,Typical Room Temperature Properties. Form Yield Strength 0 2 Offset Ultimate Tensile Strength Elongation. ksi MPa ksi MPa,Plate Annealed 49 338 96 662 45,Sheet Annealed 61 421 110 758 39. Rod and Bar Annealed 47 324 100 690 45,Tubing Cold Drawn 129 889 145 1 000 15. Tubing Annealed 64 441 112 772 36,PHYSICAL PROPERTIES. Density Magnetic Permeability Specific Heat Specific Gravity Melting Range. 0 294 lb in3 200 oersted 1 005 0 105 Btu lb F 8 13 2 500 2 550 F. 8 14 g cm3 440 J kg K 1 370 1 400 C,For internal use only.
elevated Temperature physical Properties, Temperature Modulus of Elasticity Thermal Conductivity Electric Resistivity. F C 103 ksi kN mm Btu in ft hr F W m K circ mil ft cm. 32 0 73 10 5 677 112,68 20 28 3 195 75 10 8 678 112. 200 93 27 4 85 687,212 100 190 12 4 114,392 200 185 14 1 118. 400 204 26 8 98 710,572 300 179 15 6 120,600 316 25 8 110 728. 762 400 174 16 9 124,800 427 25 120 751,932 500 168 18 3 126.
1 000 538 23 8 131 761,1 112 600 161 19 6 126,1 200 649 22 7 142 762. 1 292 700 154 21 127,1 400 760 21 2 155 765,1 472 800 142 23 2 128. 1 600 871 19 4 172 775,1 652 900 130 25 7 129,1 800 982 17 3 192 782. 1 832 1 000 119 28 1 130,impact resistance,Temperature Orientation Impact Energy. F C ft lbs Joules,Room Room Longitudinal 79 107,Room Room Transversal 83 113.
110 43 Longitudinal 78 106,110 43 Transversal 78 5 106. 320 196 Longitudinal 67 91,320 196 Transversal 71 5 97. 423 253 Longitudinal 68 92,423 253 Transversal 68 92. corrosion resistance, Alloy 825 exhibits outstanding performance in both acids and alkalis in oxidizing as well as. reducing environments The high nickel content gives the alloy exceptional resistance to general. corrosion pitting crevice corrosion intergranular corrosion as well as stress corrosion cracking. For internal use only,elevated Temperature physical Properties.
Test Environment Temperature Length of Test Corrosion Rate. Name Test conditions F C Days mpy mm y,Sulfuric Acid 40 Sulfuric Acid 122 50 7 0 5 0 013. Sulfuric Acid 40 Sulfuric Acid 212 100 7 14 0 36,Sulfuric Acid 60 Sulfuric Acid 122 50 7 4 0 1. Sulfuric Acid 60 Sulfuric Acid 212 100 7 20 0 51,Sulfuric Acid 80 Sulfuric Acid 122 50 7 5 0 13. Sulfuric Acid 80 H2SO4 212 100 7 20 0 51, Sulfuric Acid Aqueous solution containing 210 99 45 2 0 051. 0 05 Sulfuric Acid, Sulfuric Acid 12 Sulfuric Acid pickling solution 180 82 26 0 2 0 005.
containing copper sulfate up to 11 2,Immersed inside pickling tank. Sulfuric Acid 50 Sulfuric Acid 22 Nitric Acid 150 66 6 0 5 0 013. Sulfuric Acid 50 Sulfuric Acid 182 83 5 4 3 0 109,22 Nitric Acid 19 Water. Phosphoric Acid 45 Phosphoric Acid 145 155 63 68 30 0 6 0 015. Phosphoric Acid 75 Phosphoric Acid 172 78 30 0 2 0 005. Phosphoric Acid 75 Phosphoric Acid 221 105 30 1 3 0 033. Phosphoric Acid 75 Phosphoric Acid 240 260 116 127 30 3 9 0 009. Phosphoric Acid 20 H3PO4 2 H2SO4 170 200 77 93 117 0 7 0 018. 1 HF 40 H2O plus CaSO4, Phosphoric Acid 75 80 H3PO4 1 H2SO4 with some HF 250 315 121 157 8 120 3 05. Violent Agitation, Nitric Acid White fuming Nitric Acid room room 30 0 5 0 013. Nitric Acid White fuming Nitric Acid 160 71 7 43 1 09. Nitric Acid Inhibited white fuming Nitric Acid room room 30 0 2 0 005. Nitric Acid Inhibited white fuming Nitric Acid 160 71 7 6 7 0 17. Nitric Acid Inhibited red fuming Nitric Acid room room 30 0 6 0 015. Nitric Acid Inhibited red fuming Nitric Acid 160 71 7 6 4 0 163. Hydrochloric Acid 5 Hydrochloric Acid room room 4 9 0 124. Hydrochloric Acid 5 Hydrochloric Acid 104 40 17 8 0 124. Hydrochloric Acid 5 Hydrochloric Acid 150 66 79 2 007. Hydrochloric Acid 10 Hydrochloric Acid room room 7 2 0 183. Hydrochloric Acid 10 Hydrochloric Acid 104 40 18 6 0 472. Hydrochloric Acid 10 Hydrochloric Acid 150 66 102 2 591. Hydrochloric Acid 20 Hydrochloric Acid room room 7 3 0 185. Hydrochloric Acid 20 Hydrochloric Acid 104 40 17 2 0 437. Hydrochloric Acid 20 Hydrochloric Acid 150 66 60 1 524. Hydrochloric Acid Concentrated Hydrochloric Acid 104 40 480 12 2. Hydrochloric Acid Concentrated Hydrochloric Acid 150 66 1 130 28 7. Acetic Acid 10 Acetic Acid boiling boiling 5 0 1 0 003. Formic 10 Formic Acid boiling boiling 5 2 5 0 064,Lactic 10 Lactic Acid boiling boiling 5 0 3 0 008.
Maleic 10 Maleic Acid boiling boiling 5 0 1 0 003, Phtalic 10 Phtalicic Acid boiling boiling 5 0 1 0 003. Oxalic 10 Oxalic Acid boiling boiling 5 20 0 508, Organic Acid Mixture 99 Acetic Acid 0 1 water 225 107 40 0 2 0 005. Organic Acid Mixture 96 5 98 acetic acid 1 5 formic acid 225 107 262 6 0 152. For internal use only,1 1 5 water, Organic Acid Mixture 91 5 acetic acid 1 5 3 formic acid 230 290 110 143 55 1 5 0 038. 0 5 potassium permanganate balance water, Organic Acid Mixture 40 acetic acid 6 propionic acid 20 butane 345 174 217 2 0 051. 5 pentane 8 ethyl acetate 5 methyl,ethyl ketone plus other esters and ketones.
Formability, Alloy 825 has good ductility and may be readily formed by all conventional methods Because. the alloy is stronger than regular steel it requires more powerful equipment to accomplish forming. Heavy duty lubricants should be used during cold forming It is essential to thoroughly clean all traces. of lubricants after forming as embrittlement of the alloy may occur at high temperatures as a result. Heat Treatment, Annealing is done at 1 750 F 954 C with rapid air cool. Hot Working, Hot working may be done but should be accomplished at temperatures under 1 700 F 927 C. to maintain optimum corrosion resistance of the alloy. Cold Working, Cold forming may be done using standard tooling although lain carbon tool steels are not. recommended as they tend to produce galling Soft die materials bronze zinc alloys etc minimize. galling and produce good finishes but die life is somewhat short For long production runs the alloy. tool steels D 2 D 3 and high speed steels T 1 M 2 M 10 give good results especially if hard. chromium plated to reduce galling Tooling should be such as to allow for liberal clearances and radii. Heavy duty lubricants should be used to minimize galling in all forming operations Bending of sheet. or plate through 180 is generally limited to a bend radius of 1 T for material up to 1 250 thick 3 175. mm and 2 T for material thicker than 1 250 3 175 mm. Alloy 825 is hardened by cold work only, The commonly used welding methods work well with Alloy 825 Matching alloy filler metal should.
be used If matching alloy is not available then the nearest alloy richer in the essential chemistry. Ni Co Cr and Mo should be used All weld beads should be slightly convex. It is not necessary to preheat Surfaces to be welded must be clean from oil paint or crayon. markings and any residual lubricants used in the forming process The cleaned area should extend. at least 2 5 08 mm beyond either side of a weld joint. Gas Tungsten Arc Welding DC straight polarity electrode negative is recommended. Keep as short an arc length as possible and use care to keep the hot end of filler metal. always within the protective atmosphere,For internal use only. Shielded Metal Arc Welding Electrodes should be kept in dry storage and if moisture has been picked up. the electrodes should be baked at 600 F 316 C for one hour to insure dryness Current settings vary from. 60 amps for thin material 0 062 thick up to 140 amps for material of 0 500 thick and heavier It is best to weave. the electrode slightly as this alloy weld metal does not tend to spread Cleaning of slag is done with a wire brush. hand or powered Complete removal of all slag is very important before successive weld passes and also after. final welding, Gas Metal Arc Welding Reverse polarity DC should be used and best results are obtained with the welding. gun at 90 degrees to the joint For Short Circuiting Transfer GMAW a typical voltage is 20 23 with a current of. 110 130 amps and a wire feed of 250 275 inches per minute 635 698 mm For Spray Transfer GMAW voltage. of 25 to 33 and current in the range of 175 300 amps with wire feed rate of 200 350 per minute 508 889 mm. are typical, Submerged Arc Welding Matching filler metal the same as for GMAW should be used. DC current either reverse or straight polarity may be used Convex weld beads are preferred. Conventional machining techniques for iron based alloys may be used on Alloy 825. This alloy does work harden during machining, Heavy duty machining equipment and tooling should be used to minimize chatter or work hardening. of the alloy ahead of the cutting Most any commercial coolant may be used in the machining operations. Water base coolants are preferred for high speed operations such as turning grinding or milling. Heavy lubricants work best for drilling tapping broaching or boring. Turning Carbide tools are recommended for turning with a continuous cut High speed steel tooling should. be used for interrupted cuts and for smooth finishing to close tolerance Tools should have a positive rake angle. For drilling steady feed rates must be used to avoid work hardening due to dwelling of the drill on the metal. Rigid set ups are essential with as short a stub drill as feasible Heavy duty high speed drills with a heavy web. are recommended, For milling to obtain good accuracy and a smooth finish it is essential to have rigid machines and fixtures.
and sharp cutting tools High speed cutters such as M 2 or M 10 work best with cutting speeds of 30 40 feet. per minute 914 1 220 cm and feed of 0 004 0 006 01016 01524 mm per cutting tooth. For grinding the alloy should be wet ground and aluminum oxide wheels or belts are preferred. ALLOY 825 DATA SHEET UNS N08825 Alloy 825 UNS designation N08825 is a nickel chromium alloy with additions of molybdenum and copper It has excellent resistance to both reducing and oxidizing acids to stress corrosion cracking and to localized attacks such as pitting and crevice corrosion Alloy 825 is especially

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