EN10083 1.6582 34CrNiMo6 Hardening Steel-Heat Treatment

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Applications 34CrNiMo6, it is one kind of Quench and tempering special CrNiMo steel material, characterized by high tensile strength and high toughness. It is suitable to the manufacture of components of maximum thickness equal to 120 mm meanly or strongly stressed and even with acomplicated geometry (shafts, camshafts, axles, levers, connecting rods, rocker arms, gear wheels). To improve the workability at the machines tools it can be booked with the addition of Ca or re-sulphurized (S60,1%). The use of resulphurized steels involves a worsening of the tensile strength characteristics along the transversal, of the impact strength and of the fatigue strength. Advised austenitic grain dimension > 5 according to UNI 3245 (similar to ASTM E 112-82) Back to Top All Grades Comparison Material no. DIN BS970 SAE-AISI GOST ANFOR 1.6580 34CrNiMo6 817M40 4340 38Ch2N2MA 35NCD6 Back to Top Chemical Composition(%) C Mn Si P S Cr Ni Mo 0.30-0.38 0.50-0.80 0.40 max 0.025 max 0.035 max 1.30-1.70 1.30-1.70 0.15-0.30 Back to Top Mechanical Properties(T=20°C if not differently stated) Heat treatment state((Hot Rolled) Diameter(mm) Rm (Mpa) Rp0.2 (Mpa) Fracture elongation A5 (%) Notch impact energy ISO-V [J] Hardness (HB) SOFT ANNEALED / 838 min / / / 248 max QUENCHED AND TEMPERED 16 max 1200-1400 1000 min 9 min 40 min 353-409 QUENCHED AND TEMPERED 16-40 1100-1300 900 min 10 min 45 min 324-382 QUENCHED AND TEMPERED 40-100 1000-1200 800 min 11 min 45 min 295-353 QUENCHED AND TEMPERED 100-160 900-1000 700 min 12 min 45 min 265-295 QUENCHED AND TEMPERED 160-250 800-950 600 min 13 min 45 min 238-280 Back to Top HEAT TREATMENT AND HOT PLASTIC DEFORMATION TEMPERATURES - TEMPERATURE ° C Cooling Medium Hot plastic deformation 850-1100 / Normalizing 850-880 air Soft Annealing 650-680 air Quenching 830-860 oil Tempering 540-660 air Back to Top ADVISED WELDING PROCESSES SMAW B (basic); GMAW; GTAW; PAW; LBW*; EBW* ( *on vacuum-sealed outgased steels ) Back to Top ADVISED WELDING PROCEEDINGS f.m. at low C + Tp** + TB or PWHT austenitic f.m. + Tp ( 150 ° C ) f.m. Ni base alloy + Tp ( 150 ° C ) + PWHT Back to Top GENERAL PRECAUTIONS multipass welding
HD reduction ( 6 5 ); reconditioning of electrodes
edges cleaning
reduction of the degree of the joint constraint
Rd reduction
single layer buttering technique advised Shanghai Unite Steel CO.,LTD Cindy Liu Tel: +86--021--35316960-811 Fax: +86--021--35316961 SKYPE:ustcindy Email:cindyliu@shunitesteel.com www.shunitesteel.com www.shunitesteel.com.cn

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Shanghai Unite Steel Trading Co., Ltd.

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