BOHLER VIEW CHEMICAL ANALYSIS % HEAT TREATMENT CORRESPONDING SPECIFICATIONS TYPICAL APPLICATIONS
C% Si% Mn% Cr% Mo% Ni% W% V% Co% Hardening Temperature Quenching Medium Tempering Temperature Brinell Rockwell Hardness JAPAN JIS AISI POLDI THREAD
EN-1A 0.07 TO 0.15 0.10 0.80 TO 1.00 S 0.20 to 0.30 P 0.70 Max - - - - - - - - - - - Auto Parts,tools & Production Machine.
EN-8 0.35 TO 0.45 0.05 TO 0.30 0.60 TO 1.00 S 0.06 MAX P 0.06 MAX - - - - 750-900 OIL 150-200 - - - - Components of small cross section,requiring low tensile strength,as well as heavy forging in the normalised condition for automative & general engineering such as axels,clutch,shafts,presses & Punches Parts, Piston rods & gear rods.
EN-9 0.50 TO 0.60 0.05 TO 0.30 0.5 TO 0.80 - - - - - - 850-900 OIL 200-250 55-60 - - - Bolts, m/c Tool. Axial shaft
EN-19  (V 320) 0.35 TO 0.45 0.10 TO 0.30 0.50 TO 0.80 0.90 TO 1.40 0.20 TO 0.40 - - - - 900-950 OIL 200-225 45-55 SCM 4 4140 - Components of mediums & large cross section,requiring low tensile Strength,as well as heavy forging in the normalised condition for automatic engineering and gear & engine construction such as craneshafts stering knoking connecting
EN-24  (V 130) 0.35 TO 0.45 0.10 TO 0.35 0.45 TO 0.70 0.90 TO 1.40 0.20 TO 0.35 1-3 TO 1.8 - - - 830-860 OIL 540-680 45-55 SNCM 8 4340 - Highly stressed components of large cross section for aircraft,automotive & general engineery application such as gears,crane shafts & heavy duty gearshaft in aircrafts & truck construction & mechanical engineering.
EN-31  R-100 0.90 TO 1.20 0.10 TO 0.35 0.30 TO 0.75 1.00 TO 1.60 - - - - - 820-860 OIL 180-225 59-65 - - - For roller bearing components such as baks,cylinderical,conical & needle rollers.
EN-36B E-200 0.12 TO 0.18 0.10 TO 0.35 0.30 TO 0.60 0.60 TO 1.10 - 3.0 TO 3.75 - - - 780-860 OIL 170-210 61-63 SNC 22 3415 - Components with large cross section,requiring high toughness & Score strength such as gears, crane shafts & heavy duty gearshafts in aircrafts & truck construction & mechanical engineering.
EN-42 0.70 TO 0.85 0.10 TO 0.40 0.55 TO 0.75 - - - - - - 600-700 DIRECT HARDENING - 40-45 - - - Special gear case hardening tensils Tools.
EN-44 0.90 TO 1.20 0.30 0.45 TO 0.70 - - - - - - 650-750 OIL 150 45-50 - - - Spring action parts.
EN-45   F-110 0.50 TO 0.60 1.5 TO 2.0 0.70 TO 1.00 - - - - - - 830-860 OIL 470-520 50-55 - 9255 - Leaf & truncated conical springs for automate & general engineering.
EN-47 0.45 TO 0.55 0.50 0.50 TO 0.80 0.80 TO 1.20 - - - 0.15 MIN - - - - - - 6150 - High duty volute and leaf springs, Heavy engine valve springs,Helical and torsional bar springs. It has a high ratio of yield point to tensile strength and torsional fatigue strength.
EN-351 0.10 TO 0.20 0.35 0.60 TO 1.00 0.40 TO 0.80 0.08 TO 0.10 0.60 TO 1.00 - - - 850-860 OIL 175-200 62-64 - - - M/c spring parts
EN-353 0.10 TO 0.20 0.35 0.50 TO 1.00 0.75 TO 1.25 0.08 TO 0.15 1.00 TO 1.50 - - - 840-870 OIL 150-200 62-64 - - - M/c components
SAE-8620 0.18 TO 0.23 0.20 TO 0.35 0.70 TO 0.90 0.40 TO 0.60 0.15 To 0.25 0.40 TO 0.70 - - - 780-820 OIL/AIR 150-200 - - - - Gears,Pinions,Lay shafts,Cambashafts,Mining haulage,Cage suspension,Lifting gears.Generally used for parts where direct hardening is prefered. It can also be used as an alternative to EN-35 and EN-36A Steel.