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AISI4343 Alloy Steel Seamless Pipe Tube UNS G40436 Alloy Steel Data Sheet
| Product Name | Carbon Steel Pipe; Carbon Steel Tube | |||
| | A36; A106B; A113; A131; A283;A284; A306; A335; A573; SS400; SAE1006; SAE1008; SAE1010; 1020; 1015; 4001; 4130; 4140; 4340 Q195; Q215; Q235B; Q255; Q275; Q345B; Q420; Q460; Q550; Q690; S275JR; S355JR; S40C; S45C; S50; S55C; 65Mn; T8; T10; T8A; T10A; T12A 10#; 20#; 35#;45#; etc. | |||
| | square: 10*10-1000*1000mm rectangular: 10*15 - 800*1100mm Round:10.3mm-609mm | |||
| Thickness | 0.25-100mm or customization | |||
| Length | 1-12m or customization | |||
| Protection | Plastic caps | |||
| Pipe Ends | plain, beveled, threaded, socket with holes, with PVC clap/ coupling/ clamp or as customers' requirement | |||
| Lead Time | 7-15 days | |||
| Technique | Hot Rolled/Cold Rolled/Cold Drawn | |||
| Quality Certificate | ISO 9001 | |||
| | liquid delivery (pump well, gas, water) construction pipe structural pipe(greenhouse structure, fence post) boiler pipe(Resistance to high pressure)Oil casing (Drilling for oil) Precision tube(Machine parts) | |||
4340 - Highly alloyed steel, nominally 1.8% Ni, .80% chromium and .25% molybdenum. High strength characteristics. Used for heavily stressed parts operating in fatigue and other duty conditions.
AISI 4340 has a favorable response to heat treatment usually oil quenching followed by tempering and exhibits a good combination of ductility and strength when treated thusly. Uses include piston pins, bearings, ordnance, gears, dies, and pressure vessels.
AISI 4340 is a Standard grade Alloy Steel. It is commonly called AISI 4340 Nickel-chromium-molybdenum steel. It is composed of (in weight percentage) 0.38-0.43% Carbon (C), 0.60-0.80% Manganese (Mn), 0.035%(max) Phosphorus (P), 0.04%(max) Sulfur (S), 0.15-0.30% Silicon (Si), 0.70-0.90% Chromium (Cr), 1.65-2.00% Nickel (Ni), 0.20-0.30% Molybdenum (Mo), and the base metal Iron (Fe). Other designations of AISI 4340 alloy steel include UNS G43400 and AISI 4340.
AISI 4340 is a heat treatable, low alloy steel containing nickel, chromium and molybdenum. It is known for its toughness and capability of developing high strength in the heat treating condition while retaining good fatigue strength.
| Machinability Machining is best done with this alloy in the annealed or normalized and tempered condition. It can be machined by all conventional methods. However in the high strength conditions of 200 ksi or greater the machinability is only from 25% to 10% that of the alloy in the annealed condition. Forming 4340 has good ductility in the annealed condition and most forming operations are carried out in that condition. It can be bent or formed by spinning or pressing in the annealed state. Bend radii should be 3t or greater. Welding The alloy can be fusion or resistance welded. Preheat and post heat weld procedures should be followed when welding this alloy by established methods. Heat Treatment Heat treatment for strengthening is done at 1525°F followed by an oil quench. For high strength (over 200 ksi) the alloy should first be normalized at 1650°F prior to heat treatment. See "Tempering" for strength levels. Forging Forging may be done in the range of 2250°F max. down to 1800°F. Hot Working 4340 has very good cold forming capability so that hot working should not be needed. Hot working in any but the annealed condition can affect the strength level. Consult the alloy supplier in regard to hot working. Cold Working The 4340 alloy may be cold worked, in the annealed condition, by conventional methods and tooling. It has good ductility. Annealing A full anneal may be done at 1550°F followed by controlled (furnace) cooling at a rate not faster than 50°F per hour down to 600°F. From 600°F it may be air cooled. Tempering The temperature for tempering depends upon the strength level desired. Before tempering the alloy should be in the heat treated or normalized & heat treated condition - see "Heat Treatment". For strength levels in the 260 - 280 ksi range temper at 450°F. For strength in the 125 - 200 ksi range temper at 950°F. Do NOT temper the alloy if it is in the 220 - 260 ksi strength range as tempering can result in degradation of impact resistance for this level of strength. Other Comments AISI 4340 is considered to be a "through hardening" steel such that large section sizes can still be heat treated to high strength.
1008 | 1010 | 1015 | 1018 | 1020 | 1025 | 1035 | 1040 | 1045 | 1050 | 1117 | 1141 | 1144 | 12L14 | 1215 | 4140 | 4150 | 4340 | 8620 | A36 | A653 | A513 | Mechanical Properties | Physical Properties | Carbon Steel Pipe Standards | ASTM A53 B Working Pressure | ASTM A106 B Pressure Temperature Rating | Carbon Steel | Steel Alloy Designations | Chemical Composition Analysis of Carbon Steel Table | UNS Number G1 | UNS Number G2 | UNS Number G3 | UNS Number G4 | UNS Number G5 | UNS Number G6 | UNS Number G7 Pipes Tubes Plates Bars Square Tubes Weight Calculation CalculatorPipe Working Pressure Calculation Conversion Calculator Calculation-Pressure|Weight|Temperature|Volume|Length Conversion Table-Pressure|Stress|Mass|Length|Temperature|SI Prelxes Metals Weight Calculator
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