1.1127 38mn6 Alloy Steel Tubes for Mechanical Purpose

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1.1127 38mn6 Alloy Steel Tubes for Mechanical Purpose

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Product Description

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Basic Information

Model NO.:

38mn6

Technique:

Hot-Rolled + Cold-Drawn

Material:

Alloy Steel

Surface:

As Required

Usage:

For Oil Equipment

Section Shape:

Round

Cutting Service:

Available

MTC:

3.1 or 3.2 Certificate

Delivery:

N, Q, T

Package:

Seaworthy Standard

Specification:

30-850mm

Origin:

China

HS Code:

7304192000

Capacity:

50,000 Tons/Year

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Product Description

1.1127 38Mn6 40Mn2 Alloy Steel Tubes

Application:

Parts requiring excellent fatigue resistance (e.g., shafts, gears).

Various safety-critical mechanical parts.

Standard: EN10297 Seamless Circular Steel Tubes for Mechanical and General Engineering Purposes

Steel Grades: EN10297: 1.1127 38Mn6

Competitive Advantages

High strength & High tenacity

Good hardenability

High resistance to thermal properties

Competitive price & Fast production leadtime

Size 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 (Choose the larger value)

Wall Thickness Tolerances

Scope of OD	Ratio (WT/OD)	Tolerance
102mm max	/	+/12.5% or +/-0.4mm
102mm min	0.05 max	+/15% or +/-0.4mm
102mm min	0.05-0.10	+/12.5% or +/-0.4mm
102mm min	0.10 min	(-10%, +12.5%)

Delivery & Surface Conditions

Delivery: Hot Rolled only, Stress Relieved, Annealed, Normalized, Quenched and Tempered.

Surface: Black surface with oxygen skin; Grinded or Peeled (External/Internal).

Mechanical Properties (Quenched and Tempered)

WT (mm)	Tensile Strength (Mpa)	Yield Strength (Mpa)	Elongation (L) (%)	Elongation (T) (%)
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

Certification & Marking

The hollow bar is supplied with 3.1.B inspection certificate according to EN 10204 and ISO 10474 standards. Indelible ink marking includes manufacturer's trademark, standard, dimensions, steel grade, condition, cast no., and item number.

Packaging

Hollow bars are delivered in strapped bundles. Weight ranges from 2000kg to 5000kg per bundle, with a minimum of 4 pieces per bundle.

Frequently Asked Questions

Q1: What are the main applications for 38Mn6 alloy steel tubes?

A: These tubes are ideal for mechanical parts requiring high fatigue resistance, such as shafts, gears, and various safety-critical components in general engineering and oil equipment.

Q2: What is the manufacturing standard for these tubes?

A: They are produced according to the EN10297 standard, which specifies seamless circular steel tubes for mechanical and general engineering purposes.

Q3: What range of sizes do you offer for these mechanical tubes?

A: We provide an outer diameter (OD) range from 40mm to 810mm and a wall thickness (WT) from 2mm to 100mm.

Q4: What types of delivery conditions can be requested?

A: Available delivery conditions include Hot Rolled, Stress Relieved, Annealed, Normalized, and Quenched and Tempered (Q+T).

Q5: Is quality certification provided with the shipment?

A: Yes, all hollow bars are supplied with a 3.1.B inspection certificate in accordance with EN 10204 and ISO 10474.

Q6: How are the tubes packaged for transport?

A: The tubes are packed in seaworthy strapped bundles, typically weighing between 2000kg and 5000kg to ensure safety during international transit.