Specific Heat. 4140. (J/kg-K) 473 @ 150 - 200°C. FLEXOR®. .16 Btu/lb/°F. The limitations and inferiority of 4140 alloy steel can be frustrating and jeopardize the success of your project or application. Contact Pennsylvania Steel Corporation today to learn more about FLEXOR® and its advantages over 4140 steel. 4140 cold drawn quenched and tempered steel bars, 4140 sae aisi 4140 alloy steel bar price per kg after quenching and tempering (Q&T) for b7 grade bolts and studs. US $740.00-$750.00/ Metric Ton. 50 Metric Tons (Min Order) 12 YRS Shandong Le Ren Special Steel Co., Ltd. 61.5%.
Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Annealing:Heat the steel slowly to 820-860°C and allow enough time for the steel to be thoroughly heated. Cool slowly in the furnace to 580°C followed by air cooling. AISI 4340 Steel W-Nr. 1.6511 DIN 36CrNiMo4 - OTAI 3.Heat treatment of AIS 4140 steel grade. Annealing; Heat to 844°C (1550°F), then cooling in the furnace. Welding; AISI 4340 alloy steel can be welded using fusion or resistance welding methods. But need Preheat and post heat weld procedures , while welding this steel by established methods. Heat Treatment; Heat to 830°C (1525°F) then quenching in oil. AISI 4340 steel bar price per kg, View steel bar price per Heat to 830 oC - 860 oC, hold until temperature is uniform throughout the section, soak for 10 - 15 minutes per 25 mm section, and quench in oil, water, or polymer as required. *Temper immediately while still hand warm. Nitriding 4340 hardened and tempered bar can also be successfully nitrided, giving a surface hardness of up to Rc 60.
Quenching, Normalizing & tempering processes can increase the hardness to the desired level. 4140 PH has a standard, industry recognized Rockwell C Hardness rating of 28 32. Most sources recognize and tend to prefer quoting and requesting the Rockwell C Scale. 4140PH ranges from Brinell Hardness 270 Heat Treating 4140 steel FAQ :anvilfire How-to.1) 4140 is an OK die steel but is not recommended for radical shaped dies such as narrow fullering, crown and so on. 2) Fully hardened 4140 ranges from 54 to 59 HRC. But it should be tempered for any heavy use. 3) Tempering recommendations from the ASM heat treaters guide for 4140-4142 is a minimum of 400°F. This leaves near full hardness. Heat Treating Services - AI Heat TreatingWhile most materials can be quenched and tempered to a degree, the starting chemistry dictates the range of achievable properties. Plain carbon steels like 1018 are not hardenable to the same extent as alloy steels such as 4140, 4145, or 4330V.
Relative Properties Physical Properties. Density:0.278 lb/in 3 (7695 kg/m 3) Specific Gravity:7.70 Modulus of Elasticity:30 x 10 6 psi (207 GPa) Machinability:125% of a 1% carbon steel Heat Treating Instructions Hardening. Preheating:Heat at a rate not exceeding 400°F per hour (222°C per hour) to 1200-1250°F (649-677°C) and equalize. Austenitizing (High Heat):Heat slowly from the sae aisi 4140 alloy steel bar price per kg after quenching sae aisi 4140 alloy steel bar price per kg after quenching and tempering (Q&T) for b7 grade bolts and studs, US $ 740 - 750 / Metric Ton, AISI 4140 / SAE 4140 / 42CrMo4 / SCM440 / en19, AiSi, ASTM, bs, DIN, GB, JIS, Shandong, China.Source from Shandong Le Ren Special Steel Co., Ltd. on .4140HW Alloy Steel Technical Data4140HW meets AISI4140 standards and has improved hardenability and strength in heavier cross-sections. Alloy Description TimkenSteels 4140HW grade is a fine-grained, low-alloy steel that offers optimum heat-treat response in heavier cross-sections. You find 4140HW in a variety of bar and tubing applications in quenched and tempered conditions.