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Introduction
DIN 17458
covers seamless austenitic stainless steel tubes intended for applications
requiring excellent corrosion resistance, high-temperature performance,
mechanical strength, dimensional accuracy, and reliable service life. These
seamless stainless steel tubes are suitable for demanding industrial
environments involving corrosive media, elevated temperatures, pressure, and
heat transfer.
DIN 17458
seamless austenitic stainless steel tubes are widely used in chemical
processing, petrochemical plants, power generation, heat exchangers,
condensers, pharmaceutical equipment, food processing, mechanical engineering,
and process industries. Their seamless construction provides excellent tube
integrity and dependable performance in demanding service conditions.
Ladhani
Metal Corporation is a manufacturer, supplier, and exporter of DIN 17458
Seamless Austenitic Stainless Steel Tubes, supplying high-quality stainless
steel tubes in various grades, sizes, wall thicknesses, surface finishes, and
customized dimensions worldwide.
Applicable Standard
Standard
Specification: DIN 17458
Organization:
Deutsches Institut für Normung (DIN)
Title:
Seamless Austenitic Stainless Steel Tubes
This
specification covers seamless austenitic stainless steel tubes subject to
special quality requirements for industrial, pressure, heat transfer, and
engineering applications.
Forms of Supply
•
Seamless Austenitic Stainless Steel Tubes
• Seamless Circular Tubes
• Heat Exchanger Tubes
• Condenser Tubes
• Boiler Tubes
• Process Tubes
• Precision Tubes
• Instrumentation Tubes
• Straight Length Tubes
• Custom Cut Tubes
Grades Covered Under DIN 17458
•
X5CrNi1810
• X2CrNi1911
• X6CrNiTi1810
• X6CrNiTi17122
• X2CrNiMo17132
• X6CrNiMoTi17122
• X6CrNiNb1810
• Other Austenitic Stainless Steel Grades as specified under DIN 17458
Supply Condition
•
Seamless Condition
• Hot Finished Condition
• Cold Finished Condition
• Annealed Condition
• Solution Annealed Condition
• Bright Annealed Condition
• Pickled and Passivated Condition
Surface Finish
• Mill
Finish
• Bright Finish
• Pickled Finish
• Passivated Finish
• Polished Finish
• Smooth Finish
• Precision Finished Surface
Standard Sizes
Stainless Steel Tubes
Outside
Diameter: 6 mm to 610 mm
Wall
Thickness: 0.5 mm to 50 mm
Length:
Up to 18 meters
Custom
outside diameters, wall thicknesses, lengths, and surface finishes are
available according to customer requirements.
Chemical Composition of DIN 17458
The chemical
composition varies according to the selected austenitic stainless steel grade.
|
Grade |
C % |
Si % |
Mn % |
P % |
S % |
Cr % |
Ni % |
Mo % |
Ti % |
|
X5CrNi1810 |
≤0.07 |
≤1.00 |
≤2.00 |
≤0.045 |
≤0.030 |
17.0–19.0 |
8.5–10.5 |
— |
— |
|
X2CrNi1911 |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.045 |
≤0.030 |
18.0–20.0 |
10.0–12.5 |
— |
— |
|
X6CrNiTi1810 |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.045 |
≤0.030 |
17.0–19.0 |
9.0–12.0 |
— |
5×C–0.8 |
|
X6CrNiTi17122 |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.045 |
≤0.030 |
16.0–18.0 |
10.0–14.0 |
2.0–3.0 |
5×C–0.8 |
|
X2CrNiMo17132 |
≤0.03 |
≤1.00 |
≤2.00 |
≤0.040 |
≤0.030 |
16.5–18.5 |
11.0–14.0 |
2.0–2.5 |
— |
|
X6CrNiMoTi17122 |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.045 |
≤0.030 |
16.0–18.0 |
10.0–14.0 |
2.0–3.0 |
5×C–0.8 |
|
X6CrNiNb1810 |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.045 |
≤0.030 |
17.0–19.0 |
9.0–12.0 |
— |
— |
Chemical
composition values are based on DIN 17458 grade tables and should be verified
against the applicable edition and purchase specification.
Mechanical Properties of DIN 17458
The
mechanical properties depend on the selected grade and delivered condition.
Typical minimum or specified values include:
|
Grade |
Tensile Strength
(MPa) |
0.2% Yield
Strength (MPa) |
1% Yield Strength
(MPa) |
Elongation (%) |
|
X5CrNi1810 |
500–700 |
195 |
230 |
40 |
|
X2CrNi1911 |
460–680 |
180 |
215 |
40 |
|
X6CrNiTi1810 |
500–730 |
200 |
235 |
35 |
|
X6CrNiTi17122 |
510–710 |
205 |
240 |
40 |
|
X2CrNiMo17132 |
490–690 |
190 |
225 |
40 |
|
X6CrNiMoTi17122 |
500–730 |
210 |
245 |
35 |
|
X6CrNiNb1810 |
As Specified |
As Specified |
As Specified |
As Specified |
DIN 17458
specifies tensile strength, 0.2% and 1% proof stresses, elongation, and impact
requirements according to grade and delivery condition.
Key Features of DIN 17458 Stainless Steel Tubes
•
Excellent corrosion resistance
• Superior resistance to oxidation
• High mechanical strength
• Excellent high-temperature performance
• Good toughness
• Excellent dimensional accuracy
• Good formability
• Reliable pressure resistance
• Excellent heat transfer performance
• Long service life
Applications of DIN 17458 Stainless Steel Tubes
Chemical & Petrochemical Industry
• Process
Piping
• Chemical Processing Equipment
• Heat Exchangers
• Condensers
• Process Systems
Power Generation Industry
• Boiler
Systems
• Heat Exchanger Tubes
• Condenser Tubes
• Cooling Systems
• Power Plant Equipment
Oil & Gas Industry
• Process
Equipment
• Refinery Systems
• Fluid Transportation
• Heat Transfer Equipment
Food & Pharmaceutical Industry
•
Hygienic Process Piping
• Food Processing Equipment
• Pharmaceutical Equipment
• Sanitary Process Systems
Mechanical Engineering
• Machine
Components
• Precision Equipment
• Industrial Machinery
• Engineering Assemblies
Fabrication and Welding
DIN 17458
seamless austenitic stainless steel tubes offer excellent fabrication
characteristics.
•
Suitable for conventional fabrication processes
• Excellent bending properties
• Good forming characteristics
• Suitable for machining
• Good weldability where fabrication requires welding
• Reliable dimensional stability
• Suitable for custom fabrication
Proper
fabrication and welding procedures should be followed according to the selected
stainless steel grade.
Heat Treatment
DIN 17458
stainless steel tubes may be supplied in suitable annealed or solution annealed
conditions depending on the selected grade.
•
Solution annealing improves corrosion resistance
• Annealing enhances ductility and formability
• Controlled heat treatment ensures uniform mechanical properties
• Stress relieving minimizes fabrication stresses where required
• Proper heat treatment improves long-term service performance
Advantages of DIN 17458 Stainless Steel Tubes
•
Excellent corrosion resistance
• High mechanical strength
• Superior high-temperature performance
• Excellent dimensional accuracy
• Good formability
• Reliable pressure performance
• Long operational life
• Low maintenance requirements
• Excellent durability
• Suitable for demanding applications
Conclusion
DIN 17458
Seamless Austenitic Stainless Steel Tubes are high-quality stainless steel
tubes designed for chemical, petrochemical, power generation, food processing,
pharmaceutical, mechanical engineering, and industrial applications requiring
excellent corrosion resistance, high-temperature performance, mechanical
strength, and long-term reliability.
Ladhani Metal Corporation
supplies DIN 17458 Seamless Austenitic Stainless Steel Tubes in various grades,
sizes, wall thicknesses, surface finishes, and customized dimensions, providing
reliable stainless steel tubing solutions for pressure, heat transfer, process,
and engineering applications worldwide.
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