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Scm 440/4140 Chrome Molybdenum Steel Rod, Induction Hardening 4140, 42crmo4 Qt, En19 Rod

  • chrome molybdenum steel, chromium molybdenum steel
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  • External Diameter Accuracy : f7, f8
  • Surface Roughness : Ra max 0.2 μm
  • Hard Chrome Thickness : <Φ22.225mm: min 15 μm
                                               ≧Φ24mm: min 20 μm
  • Surface Hardness : min HV 850
  • Straightness : <Φ20mm: max 0.25/1000mm
                            ≧Φ20mm: max 0.2/1000mm
  • Roundness : tolerance × 1/2
  • Standard Length : 2M - 6M
  • Standard Size : Φ10 ~ Φ200 (Φ1/4” ~ Φ10”)
  • Steel Grade Equivalent: JIS G4105(SCM440), SAE4140, DIN 42CrMo4, EN 42CrMo4,EN19
  • Upon request: treatment of induction Quenched and Tempered, 42CrMo4 QT, Induction Hardening 4140, EN19
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  • Product Feature
  • Tolerance form
  • Product Specification
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Dia mm Φ Inquire Dia mm Φ Inquire Dia mm Φ Inquire Dia mm Φ Inquire
10 40 76.2 127
12 45 80 130
14 50 85 135
16 55 90 140
18 56 100 150
20 57.15 101.6 152.4
25 60 105 160
28 63 110 170
30 65 115 177.8
35 70 120 180
36 75 125 200
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Product Feature

SCM 440/4140 Chrome Molybdenum Steel Rod, Induction hardening 4140, 42CrMo4 QT,EN19, 4140 chrome bar, 42CrMo4 en 10083

Purpose:

SCM 440/4140 Chrome Molybdenum Steel Rod, Induction hardening 4140, 42CrMo4 QT,EN19, 4140 chrome bar, 42CrMo4 en 10083 is the operation for auto parts, injection machine, hydraulic machine, tie bars.

Tolerance form

Tolerance of SCM 440/4140 Chrome Molybdenum Steel Rod, Induction hardening 4140, 42CrMo4 QT,EN19, 4140 chrome bar, 42CrMo4 en 10083

Grade of tolerance 
Dia mm Φ		 f g h
f7 f8 g6 h7 h8 h9
3mm -0.006
-0.016		 -0.006
-0.020		 -0.002
-0.008		 0
-0.010		 0
-0.014		 0
-0.025
3mm-6mm -0.010
-0.022		 -0.010
-0.028		 -0.004
-0.012		 0
-0.012		 0
-0.018		 0
-0.030
6mm-10mm -0.013
-0.028		 -0.013
-0.035		 -0.005
-0.014		 0
-0.015		 0
-0.022		 0
-0.036
10mm-18mm -0.016
-0.034		 -0.016
-0.043		 -0.006
-0.017		 0
-0.018		 0
-0.027		 0
-0.043
18mm-30mm -0.020
-0.041		 -0.020
-0.053		 -0.007
-0.020		 0
-0.021		 0
-0.033		 0
-0.052
30mm-50mm -0.025
-0.050		 -0.025
-0.064		 -0.009
-0.025		 0
-0.025		 0
-0.039		 0
-0.062
50mm-80mm -0.030
-0.060		 -0.030
-0.079		 -0.010
-0.029		 0
-0.030		 0
-0.046		 0
-0.074
80mm-120mm -0.036
-0.071		 -0.036
-0.090		 -0.012
-0.034		 0
-0.035		 0
-0.054		 0
-0.087
120mm-180mm -0.043
-0.083		 -0.043
-0.106		 -0.014
-0.039		 0
-0.040		 0
-0.063		 0
-0.100
180mm-250mm -0.050
-0.096		 -0.050
-0.122		 -0.015
-0.044		 0
-0.046		 0
-0.072		 0
-0.115
250mm-315mm -0.056
-0.108		 -0.056
-0.137		 -0.017
-0.049		 0
-0.052		 0
-0.081		 0
-0.130
315mm-400mm -0.062
-0.119		 -0.062
-0.151		 -0.018
-0.054		 0
-0.057		 0
-0.089		 0
-0.140
400mm-500mm -0.068
-0.131		 -0.068
-0.165		 -0.020
-0.060		 0
-0.063		 0
-0.097		 0
-0.155

(unit)µ=0.001mm

Product Specification

Chrome Molybdenum Steel, Chromium-Molybdenum Steels, SCM 440/4140 Chrome Molybdenum Steel Rod, Induction hardening 4140, 42CrMo4 QT,EN19, 4140 chrome bar, 42CrMo4 en 10083

Symbol Chemical Analysis (%) Equivalent
AISI No.
C Si Mn P S Ni Cr Mo
SCM440 0.38-0.43 0.15-0.35 0.60-0.85 ≤0.030 ≤0.030 — 0.90-1.20 0.15-0.30 4140

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