1. Steel Grade: 1.4028 DIN X30Cr13 AISI 420F
2. Product name: 1.4028 DIN X30Cr13 AISI 420F Stainless Steel Round Tube
3. Length: 20m maximum
4. Outside diameter: 3mm - 219mm
5. Wall thickness: 0.5 - 35mm
Steel 1.4028 (Mat.No. 1.4028, DIN X30Cr13, AISI 420F)
Designation by Standards
Chemical Composition (in weight %)
This steel is a general purpose free machining version of 420 stainless, a heat treatable chromium steel. 1.4028 displays the best corrosion resistance in hardened and slightly tempered (around 150oC) condition. A smoothed (industrially polished) and residue-free surface is necessary in order to achieve optimum resistance of this chromium steel grade.
Dental and surgical instruments, cutlery, pump shafts, gears pinions and cams, steel balls, and various hand tools. Not recommended for vessels containing high pressure gases or liquids or for plastic molds where high surface finishes are required.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103x N/mm2]: 215, 205 (200oC), 190 (400oC)
Density [g/cm3]: 7.73
Thermal conductivity [W/m.K]: 30.0
Electric resistivity [Ohm mm2/m]: 0.65
Specific heat capacity[J/g.K]: 0.46
Coefficient of Linear Thermal Expansion 10-6oC-1
Continuous Cooling Transformation (CCT) Diagram
Click the image to enlarge the diagram.
Heat to 745-820oC, cool slowly in air. This will produce a maximum Brinell hardness of 225. Structure is ferrite with spherical carbides.
Harden from a temperature of 950-1050oC followed by oil or air quenching. Hardness after quenching is 52-58 HRC.
Tempering temperature: 625-724oC, Structure is transformation structure with ferrite.
Mechanical properties at at ambient temperature
Condition: Annealed, quenched and tempered at 850oC, diameter d<=160 mm
0.2% Proof Stress: 650 N/mm2
Tensile strength: 850-100 N/mm2
Elongation (A5): 10% (Longit.)
Click the image to enlarge the diagram.
Hot forming temperature: 1100-800oC, slow cooling.
Good machining characteristics due to the addition of sulfur. High speeds and feeds combined with short brittle chips.
1.4028 is resistant to the atmosphere, fresh water, dilute acids and alkalis and fruit and vegetable juices.
Not commonly welded due to its air hardening characteristics. Welding may be performed after preheating to 149-204oC with post weld tempering at temperature for 2 hours . Filler metal should be AWS E/ER420.
Bozhong Group Mainly supply in forms of coil, sheet, plate, rod, bar, tube, pipe, beam, angle, flange, wire, strip, channel, etc., with various varieties, wide range of dimensions, high purity, stable chemical composition, high dimensional accuracy and excellent surface quality. The products are mainly used in the fields of industries such as automobile engineering, railway transportation, aviation, aerospace, machinery, petrochemical, energy, environmental protection, offshore, chemical, oil & gas, ilitary, power plant, nuclear power, pressure vessel, boiler equipment, mold manufacture, etc.
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Bozhong Group can supply a variety of structural steel, high-strength steel, wear-resistant steel plate, boiler and pressure vessel steel, marine engineering and stainless steel plate in the thick steel and various European standard bars and pipes and profiles.Our global sales and service network throughout all around the world to ensure that the goods reach the customer in the shortest time.
We can follow your drawings and requirements, to provide you with oxygen cutting, plasma cutting and laser cutting and other processing services. You can also perform ultrasonic testing in accordance with EN10160 standard, EN10164 standard test Z15, Z25, Z35, weld bending detection, PWHT detection,etc.
We have ISO9001: 2000 quality management system certification, and obtain the quality certification from all the well-known certification company, including TuV / LRS / GL / CE and so on.
Special steel includes as below:
Boiler and pressure vessel steel
Nuclear power steel
High strength steel
Abrasion resistant steel
Weathering, corrosion resistant and fire resistant steel
High rise building steel
Shipbuilding and offshore engineering steel
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A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.
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