SCM415

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JFS Steel's SCM415 and Steel Machining Service

Ju Feng Special Steel Co., Ltd. is an industrial steel materials, steel parts and steel-related services supplier from Taiwan. Along with steel bars, steel plates and steel tubes supply, steel cutting, drilling, machining and heat treatment services are also provided.

JFS Steel has been offering customers SCM415 Alloy Steel and precision steel machining services since 2006. With both highly skilled technology and 47 years experience, JFS Steel always makes sure to meet each customer's demand.


SCM415

Alloy Steel

Equivalent Grades: GB 15CrMo, JIS SCM415, DIN 15CrMo5. SCM415 whose surface are processed through carburizing hardening treatment are used for the parts which need high toughness or wear resistance, such as cylinder piston, crankshaft, gears, pin, shafts and so on.

Carburizing structural steel

Purpose

SCM415 is widely used in general structural steel.

Product Features:

1. High strength in room temperature and elevated temperature.
2. High notch tolerance.
3. Simplified design for bolting configuration

International Comparison of Meterials

EU
EN
INTER  ISOUSA 
AISI
JAPAN
JIS
GERMANY
DIN
CHINA
GB
FRANCE
AFNOR
ITALY
UNI
--15CrMo4--SCM41515CrMo515CrMo----

SPAIN
UNE
Sweden
SS
Finland
SFS
Poland
PN
Czechia
CSN
Austria
ONORM
Russia
GOST
England
BS
--------------

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**This comparison table is for reference only. The standards and grades of various countries have slightly different chemical compositions. Please refer to the database for details.**

Chemical Composition(JIS G4051)

碳(C)%矽(Si)%錳(Mn)%磷(P)%硫(S)%鎳(Ni)%鉻(Cr)%鉬(Mo)%銅(Cu)%
0.13-0.180.15-0.350.6-0.850≦0.030≦0.030≦0.250.9-1.20.15-0.300≦0.3

Conditions of heat treatment

  • Annealing: 850℃ Furnace Cooling
  • Normalization: 850~900℃ Air Cooling
  • Hardening: 850~900℃ 1st Oil Cooling, 800~850℃ 2rd Oil Cooling
  • Tempering: 150~200℃ Air Cooling

Criterion for heat treating conditions revise:

  • Ac: 770~835℃
  • Ar: 770~700℃
  • Ms: 410℃

Mechanical properties

Tensile strength (kgf/mm²): ≧85
Elongation (%): ≧16
Cross section reduction rate (%): ≧40
Impact value (J/cm2): ≧7
Hardness (Hb) : 235~321

Size Range

ShapeSize(mm)
Round Bar13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 45, 46, 48, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 315, 325, 335, 345, 355, 365, 375, 385, 395, 405, 415, 425, 435, 445, 455, 465, 475, 485, 495, 505, 515, 525, 535, 545, 555, 565, 575, 585, 595, 605.