Steel Equivalent Beyond-steel

Thyssenkrupp JIS
AISI Bohler  ASSAB HITACHI/ NS
DIN
CARBON STEEL
S275 SS400 1018 ASTM A36 NS 1018 17100 ST 37-2
1191 S45C 1045 EMS45 NS 1045 CK45/ C45
S50C S50C 1050 760 NS 1050 CK50
MACHINERY STEEL
7225 SCM440 4140 VCL140  709 NS 4140 42CrMo4
6582 SNCM439 4340 VCN150  705 NS 4340 34NiCrMo6
7218 SCM430H 4130 25CrMo4
PLASTIC MOULD STEEL
2311 NAK 55 P20 K 456  718 HPM 22  40CrMnMo7
2316 SUS420J2 420mod M 300 STAVAC HPM 38 X36CrMo17
TOOL & DIE STEEL
2510 SKS 3 D 1 K460 Amutit S DF 2 SGT 100MnCrW4
2363 SKD 12 A5 K 305 XW 10 X100CrMoV51
2436 SKD 2 D 6 K 107 XW 5 CRD X210CrW12
2379 SKD 11 D2 K110 KNL extra XW 41 SLD X155Cr VMo1221
2344 SKD 61 H13 W302 Isodisc 8407 DAC X40CrMoV51
HIGH SPEED STEEL (HSS)
3243 SKH 55 M 35 S-705 ASP 60 HS 6-5-2-5
3343 SKH 51 M 2 S-600 ASP 23 YXM 1 HS 6-5-2
Related Steel Round Bar Product:

SCM 440 Round Bar & Flat

Chromium Molybdenum Steel
Steel SCM 440 JIS

Characteristics
Very common Quenched & Tempered alloyed engineering steel grade With high intensity, high hardenability. It has a small distortion afer quenching, a ghigh creep strength and lasting intensity afer processing of high tempreature.

Equivalent
Thyssenkrupp 7225, DIN 42CrMo4, ASSAB 709, VCL140

Availability
Round bar, Flat bar
Diameter: 10mm – 400mm
Thickness: 5mm – 25mm

Chemical composition: ( % )

Chemical Composition(%)
C Si Mn P S Cr Mo
0.38~0.43 0.15~0.35 0.60~0.90 0.030max 0.030max 0.90~1.20 0.15~0.30

Mechanical Properties
Young’s modulus (MPa) : 200000 – 200000
Tensile strength(MPa) : 650 – 880
Elongation (%) : 8 – 25
Fatigue (MPa) : 275 – 275
Yield strength (MPa) : 350 – 550

Hot-rolled
hardness
Annealed
hardness
(HRB)
Hardening Hardening
Hardness(HRC)
Temperature(℃)
below3.15 3.15~6.00 6.01~9.00
HRC 39max 95max 830~880oil quenched 52min 51min 50min

Physical Properties
Thermal expansion (e-6/K ) : 10-10
Thermal conductivity (W/m.K ) : 25 – 25
Specific heat (J/kg.K ) : 460 – 460
Melting temperature (°C ) : 1450 – 1510
Density (kg/m3 ) : 7700 – 7700
Resistivity (Ohm.mm2/m) : 0.55 – 0.55

Application
It’s mainly used for making various kinds of machinery, automobile, mining spare part, the gearwheel of the engine, the driving gear of supercharger, the abckshaft, the conncetingrob and the pinchock under the high pressure. Parts for power train applications, cold formed fastener components, shafts, gears, drill collars for the oil exploration, etc.

Related Steel Round Bar Product:
 
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