EN26 Flat / Sqaure / Round Bar Specifications

Equivalent Grades of EN26 Round Bars

EN26 Round Bar Features

• Great oxidation resistance
• No rust or stain
• Can work at cryogenic temperatures
• Strength retention at room temperature
• Have good toughness at -450° F

EN26 Sqaure Bar Heat Treatment

To harden EN26 first heat the component to 820 to 850°C and hold at temperature until throughly soaked. Quench the EN26 component in oil, water or polymer as required. EN26 can be flame or induction hardened to achieve a high surface hardness.

Flame or Induction Hardening

EN26 hardened and tempered bar can be further surface hardened by either the flame or induction hardening methods resulting in a case hardness in excess of Rc 50. Parts should be heated as quickly as possible to the austenitic temperature range (820 oC – 850 oC) and required case depth followed by an immediate oil or water quench, depending upon hardness required, workpiece size/shape, and quenching arrangements. Following quenching to hand warm, most components should be tempered between 150 oC – 200 oC to remove quenching stresses in the case. This will have little effect on case hardness.

Hardening

Heat to 820 oC – 850 oC, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes per 25 mm section, and quench in oil, water, or polymer as required.*Temper immediately while still hand warm.

Nitriding

EN26 hardened and tempered bar can also be successfully nitrided, giving a surface hardness of up to Rc 60. Nitriding is carried out at 490 oC – 530 oC, followed by slow cooling (no quench) reducing the problem of distortion. Parts can therefore be machined to near final size, leaving a grinding allowance only. The tensile strength of the core is usually not affected since the nitriding temperature range is generally below the original tempering temperature employed.N.B. Nickel is inert to the action of nitrogen and in general resists its diffusion into steel, and this can result in a lower case hardness or longer nitriding cycle times for steels containing nickel such as EN26.

Stress Relieving

Heat to 640 oC – 660 oC, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm section, and cool in still air.

Tempering

Re-heat to 450 oC – 660 oC as required, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm of section, and cool in still air.N.B.Tempering should be avoided if possible within the range 250 oC – 450 oC due to temper brittleness.

Notes on Heat Treatment

Heating temperatures, rate of heating, cooling, and soaking times will vary due to factors such as work piece size/shape also furnace type employed, quenching medium, work piece transfer facilities, etc..Please consult your heat treater for the best results.

Machining

EN26 in the hardened and tempered as the supplied condition is still regarded as being readily machinable and operations such as turning and drilling etc. can be carried out satisfactorily using machine manufacturers, recommendations for suitable tool type – feeds, and speeds.

Welding

Welding of EN26 in the hardened and tempered condition (as normally supplied), is not recommended and should be avoided if at all possible, as the mechanical properties will be altered within the weld heat-affected zone. It is preferred that welding be carried out on EN26 while in the annealed condition and that the work piece, immediately on cooling to hand warm, is then stress relieved at 640 oC – 660 oC prior to hardening and tempering. If welding in the hardened and tempered condition is really necessary, then the work piece, immediately on cooling to hand warm, should be stress relieved at 15 oC below the original tempering temperature.

Welding Procedure

Welding of EN26 in whatever condition should always be carried out using low hydrogen electrodes – please consult your welding consumables supplier.

EN26 Flat Bars Properties

EN26 Round Bars Chemical Composition

EN26 Round Bar Mechanical Properties

EN26 Steel Bars Types

`EN26 Round Bar Standard Size

EN26 Round Bar Condition

Steel Grade EN26 Rod Surface Finish

EN26 Steel Round Bars, EN26 Rods Used in

After inspection care is taken towards packing, before dispatching EN26 Bars, EN26 Flat Bars, EN26 Square Bars, EN26 Round Bars and EN26 Hexagon Bars across through strict quality tests and delivered to their respective customers worldwide. We focus on every procedure to assure quality of EN26 Steel Flat Bars. We offers just about everything to meet your EN26 Steel Bright Bars pack requirements to industry.