DIN 1.7243 Scm420 708m20 18crmo4 AISI 4118 18CD4 Alloy Tool Steel Round Bar

Model NO.
Round bar
Composition
Ferrous Steel Scrap
Technique
Forged
Shape
Bar
Surface Treatment
Machined
Special Use
High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel, Die Material
Application
Tool Steel Bar
Length
2500-5500mm
Transport Package
N/M
Specification
6-400mm
Trademark
Smooth
Origin
China
HS Code
7228400000
Production Capacity
5000ton/Month
Reference Price
$ 450.00 - 900.00
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Product Description

APPLICATION:

Steel susceptible to the parts which require core tensil strength and high hardness. Susceptible to the parts with variable wearing resistance and loading such as: gears, screws, bolts, bushing, camshafts.

TECHNOLOGICAL INFORMATION:

Steel adjusted for cutting with a cutting machine. The carburising temperature range can be higher than provided in the file (depending on the carburising process)

SEMI-FINISHED PRODUCTS:

Steel adjusted for cutting with a cutting machine. The carburising temperature range can be higher than provided in the file (depending on the carburising process)

CHEMICAL COMPOSITION:

C Si Mn P S Cr Mo Ni B
0,15 - 0,21 Max 0,40 0,60 - 0,90 Max 0,035 Max 0,035 0,90 - 1,20 0,15 - 0,25 - -

MECHANICAL PROPERTIES:

Hardness after Symbol Value
Soft annealing (+A) HB ≤ 207
Heat treatment (carburising, quenching and tempering) (+QT) HRC ≥ 60
Ultimate tensile strength R m , after quenching and tempering at 200 °C:
Diameter, d, mm d ≤ 16 16 < d ≤ 40 40 < d ≤ 100
R m , MPa 1050 850 680

PHYSICAL PROPERTIES:

Property Unit Value
Density, ρ g·cm -3 7.85

HARDENABILITY:

EN10084:2008 Jominity test HRC mm (mm distance from quenched end)
1.5 3 5 7 9 11 13 15 20 25 30 35 40
max. 47 46 45 42 39 37 35 34 31 29 28 27 26
min. 39 37 34 30 27 24 22 21 - - - - -

TECHNOLOGICAL TREATMENT PROCESSES:

Technological treatment processes Possible application Temperature, °C
Hot forming Forging + 1050 - 850
Rolling + 1050 - 850
Thermochemical treatment Carburising + 880 - 980
Carbonitriding + 860 - 950
Heat treatment Annealing Normalising + 870 - 910
Soft annealing + 680 - 700
Heat treatment after carburising 1 ) Core hardening + 860 - 900
Intermediate annealing + 670 - 720
Case hardening + 780 - 820
Tempering + 150 - 200
1)   If possible, hardening has to be performed with the temperature equal or close to the heat treatment temperature

INTERNATIONAL STEEL GRADES:

ISO CEN Russia
18CrMo4 ISO 683-11:1987 18CrMo4 EN 10084:1998 - -
US Japan China
- - - - ~20CrMnMo GB 3077-88


DIN 1.7243 Scm420 708m20 18crmo4 AISI 4118 18CD4 Alloy Tool Steel Round Bar DIN 1.7243 Scm420 708m20 18crmo4 AISI 4118 18CD4 Alloy Tool Steel Round Bar DIN 1.7243 Scm420 708m20 18crmo4 AISI 4118 18CD4 Alloy Tool Steel Round Bar DIN 1.7243 Scm420 708m20 18crmo4 AISI 4118 18CD4 Alloy Tool Steel Round Bar DIN 1.7243 Scm420 708m20 18crmo4 AISI 4118 18CD4 Alloy Tool Steel Round Bar DIN 1.7243 Scm420 708m20 18crmo4 AISI 4118 18CD4 Alloy Tool Steel Round Bar DIN 1.7243 Scm420 708m20 18crmo4 AISI 4118 18CD4 Alloy Tool Steel Round Bar DIN 1.7243 Scm420 708m20 18crmo4 AISI 4118 18CD4 Alloy Tool Steel Round Bar

 

DIN 1.7243 Scm420 708m20 18crmo4 AISI 4118 18CD4 Alloy Tool Steel Round Bar
DIN 1.7243 Scm420 708m20 18crmo4 AISI 4118 18CD4 Alloy Tool Steel Round Bar

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