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Our Products---Mandrel Bar

Detail Specification

Material
Range of dimensions
Length
Dimension tolerance
Roughness
Chromic Plating thickness
Straightness tolerance
Length tolerance

H13, 4Cr5MoSiV1, X35CrMoV 05

80.2 - 508mm

≤17500mm

+0, -0.2mm

 Ra 0.4μm

0.045-0.080mm

≤1mm per meter

±2mm

Detail Specification

Chemical Components of H13(4Cr5MoSiV1)

C
Si
Mn
S
P
Cr
Mo
Ni
V
H
O

0.32-0.45

0.80-1.20

0.20-0.50

≤0.008

≤0.012

4.75-5.50

1.10-1.75

≤0.25

0.80-1.20

≤2PPm

≤2PPm

Mechanical Property

Tensile strength (Mpa)
Yield strength (Mpa)
Elongation (%)
Reduction of Area (%)
Impact Value (J)
Chromium plating surface hardness (HRC)
Chromium plating W.T. (MM)

1127-1274

931

≥8

≥25

≥20

60-62

0.045-0.080 

Technology Specification

Type
L(mm)
Chrome plating L1(mm)
K
End Dia.P

Φ80.2~Φ175.4

9750

9420

2  7/8"  3  1/2"

Φ60~Φ100

Φ100.6~Φ179.6

10500

10200

2  7/8"  3  1/2"

Φ60~Φ100

Φ100~Φ185.5

10600

10250

3  1/2"

Φ60~Φ100

Φ142.6~Φ175.4

10700

10380

3  1/2"

Φ90~Φ100

 Φ145.2~Φ235

11500

11200

3  1/2"   4  1/2"   5  1/2"

Φ80~Φ120

Φ127.0~Φ153.3

12500

12250

3  1/2"

Φ70

Φ144.5~Φ180.5

14000

13750

4  1/2"

Φ100

Φ190.0~Φ226.5

14500

14030

5"   5  1/2"

Φ90.5~Φ120.7 

Φ229.1~Φ272.4

15000

14750

5  1/2"    6   5/8"

Φ120~Φ150

Φ305.2~Φ358.4

10500

10250

5  1/2"    6   5/8"

Φ150~Φ200

Φ358.4~Φ600

12500-13000

12220-12720

7  5/8"    8  5/8"    9  5/8"

Φ200~Φ300