Application：
• Parts requiring excellent fatigue resistance eg. shafts, gears.
• Various safety-critical mechanical parts.
• Various safety-critical mechanical parts.
Standard:
Steel Grades:
EN10297: 1.1127 38Mn6
Competitive Advantage:
High strength
High tenacity
Good hardenability
High resistance to thermal properties
Competitive price
Fast production leadtime
High tenacity
Good hardenability
High resistance to thermal properties
Competitive price
Fast production leadtime
Sizes Range:
OD:40mm-810mm, WT:2mm-100mm
Chemical Composition(%):
Grades
|
C
|
Si
|
Mn
|
P
|
S
|
40Mn2
|
0.37-0.44
|
0.17-0.37
|
1.40-1.80
|
0.025 max
|
0.025 max
|
38Mn6
|
0.34-0.42
|
0.15-0.35
|
1.40-1.65
|
0.035 max
|
0.035 max
|
Outer Diameter Tolerances
+/-1%, or +/-0.5mm (Chose the bigger one)
Wall Thickness Tolerances
Scope of Outer Diameter
|
Ratio of Wall Thickness and Outer Diameter (WT/OD)
|
Tolerance
|
102mm max
|
/
|
+/12.5% or +/-0.4mm (Chose the bigger one)
|
102mm min
|
0.05 max
|
+/15% or +/-0.4mm (Chose the bigger one)
|
102mm min
|
0.05-0.10
|
+/12.5% or +/-0.4mm (Chose the bigger one)
|
102mm min
|
0.10 min
|
(-10%, +12.5%)
|
Delivery Conditions
Hot Rolled only
Stress Relieved
Annealed
Normalized
Quenched and Tempered
Stress Relieved
Annealed
Normalized
Quenched and Tempered
Surfaces Conditions
Black surface with oxygen skin
Grinded for external or internal surface, or external and internal surface
Peeled for external or internal surface, or external and internal surface
Grinded for external or internal surface, or external and internal surface
Peeled for external or internal surface, or external and internal surface
Mechanical Properties (Quenched and Tempered) (T=20°C if not differently stated)
Wall Thickness (mm)
|
Tensile Strength (Mpa)
|
Yield Strength(Mpa)
|
Elongation (Longitudinal) (%)
|
Elongation (Transverse) (%)
|
16 max
|
670 max
|
400 min
|
14 min
|
12 min
|
16-40
|
620 max
|
380 min
|
15 min
|
13 min
|
40-80
|
570 max
|
360 min
|
16 min
|
14 min
|
Recommended Heat Treatment Temperatures
Heat Treatment
|
Temperatures (°C)
|
Annealing
|
650-700
|
Normalizing
|
850-880
|
Austenitizing
|
820-850
|
Tempering
|
540-680
|
Tube ends:
The hollow bar comes with square cut and deburred ends.
Certification:
The hollow bar is supplied with 3.1.B inspection certificate,according to the standards EN 10204 and ISO 10474.
Identification and Marking:
The hollow bar is marked in indelible ink, the details being repeated along the entire length of each tube and on a label, as follows:
Manufacturer’s trademark – manufacturing standard – dimensions -steel grade – supply condition – cast no. – item number.
Manufacturer’s trademark – manufacturing standard – dimensions -steel grade – supply condition – cast no. – item number.
Packaging:
The hollow bar comes in strapped bundles. The minimum weight of each bundle is 2000kg; the maximum bundle weight being 5000kg, with a minimum of 4 pieces
Add:Room 1003, Building 22, Zhongcheng Lijing Xiangshan, No. 239, 2rd part of Wanjiali Middle Road, Changsha, Hunan, China
Tel: +86-731-89903933
Fax:+86-731-89853933
Skype:harrislee94
Whatsapp/Wechat:+86 18692275455
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