AISI 4340 1.6587 17hnm 18crnimo7-6 Alloy Spring Steel Rod 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
$ 900.00 - 1,350.00
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Product Description

APPLICATION:

Alloyed case hardening steel for the parts which require core tensile strength and high hardness. Susceptible to the large seized parts with high wearing resistance and loading such as: gears, screws, camshafts, bushings.

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 0,50 - 0,90 Max 0,025 Max 0,035 1,50 - 1,80 0,25 - 0,35 1,40 - 1,70 -

MECHANICAL PROPERTIES:

Hardness after Symbol Value
Soft annealing (+A) HB ≤ 229
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 1160 1080 900

PHYSICAL PROPERTIES:

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

TECHNOLOGICAL TREATMENT PROCESSES:

Technological treatment processes Possible application Temperature, °C
Hot forming Forging + 1150 - 850
Rolling + 1150 - 850
Thermochemical treatment Carburising + 880 - 980
Carbonitriding + 860 - 950
Heat treatment Annealing Normalising + 830 - 870
Soft annealing + 650 - 700
Heat treatment after carburising 1) Core hardening + 830 - 870
Intermediate annealing + 630 - 650
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
~18CrNiMo7 ISO 683-11:1987 18CrNiMo7-6 EN 10084:1998 - -
US Japan China

 
AISI 4340 1.6587 17hnm 18crnimo7-6 Alloy Spring Steel Rod Round Bar AISI 4340 1.6587 17hnm 18crnimo7-6 Alloy Spring Steel Rod Round Bar AISI 4340 1.6587 17hnm 18crnimo7-6 Alloy Spring Steel Rod Round Bar AISI 4340 1.6587 17hnm 18crnimo7-6 Alloy Spring Steel Rod Round Bar AISI 4340 1.6587 17hnm 18crnimo7-6 Alloy Spring Steel Rod Round Bar AISI 4340 1.6587 17hnm 18crnimo7-6 Alloy Spring Steel Rod Round Bar AISI 4340 1.6587 17hnm 18crnimo7-6 Alloy Spring Steel Rod Round Bar AISI 4340 1.6587 17hnm 18crnimo7-6 Alloy Spring Steel Rod Round Bar

 

AISI 4340 1.6587 17hnm 18crnimo7-6 Alloy Spring Steel Rod Round Bar
AISI 4340 1.6587 17hnm 18crnimo7-6 Alloy Spring Steel Rod Round Bar

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