Categories
- Round bars
- Stainless steel round bars 1.4028 / 3H13
- Stainless steel round bars 1.4122
- Stainless steel round bars 1.4034 / 420C
- Stainless steel round bars 1.4057 / 431
- Stainless steel round bars 1.4301 / 304
- Stainless steel round bars 1.4305 / 303
- Stainless steel round bars 1.4404 / 316L
- Stainless steel round bars duplex steel 1.4462 / S31803
- Stainless steel round bars 1.4541 / 321
- Stainless steel round bars 1.4571 / 316Ti
- Stainless steel round bars from heat-resistant steel
- Stainless steel round bars 1.4005 / 416
- Stainless steel round bars 1.4006 / 410
- Stainless steel round bars 1.4021 / 420A
- Seamless tubes and hollow bars
- Fittings
- Sheets
Item length
Diameter
Steel grade
Availability
Stainless steel round bar Diameter 50 mm in grade 1.4122 / 3H17M 250cm
- Length: 250 cm
- Outside diameter (OD): 50 mm
- Steel grade: 1.4122 / 3H17M
Availability:
available
Dispatched within: 5 days
Stainless steel round bar Diameter 50 mm in grade 1.4122 / 3H17M 300cm
- Length: 300 cm
- Outside diameter (OD): 50 mm
- Steel grade: 1.4122 / 3H17M
Availability:
available
Dispatched within: 5 days
Stainless steel round bar Diameter 50 mm in grade 1.4122 / 3H17M 100cm
- Length: 100 cm
- Outside diameter (OD): 50 mm
- Steel grade: 1.4122 / 3H17M
Availability:
available
Dispatched within: 5 days
Stainless steel round bar Diameter 50 mm in grade 1.4122 / 3H17M 110cm
- Length: 110 cm
- Outside diameter (OD): 50 mm
- Steel grade: 1.4122 / 3H17M
Availability:
available
Dispatched within: 5 days
Stainless steel round bar Diameter 50 mm in grade 1.4122 / 3H17M 120cm
- Length: 120 cm
- Outside diameter (OD): 50 mm
- Steel grade: 1.4122 / 3H17M
Availability:
available
Dispatched within: 5 days
Stainless steel round bar Diameter 50 mm in grade 1.4122 / 3H17M 130cm
- Length: 130 cm
- Outside diameter (OD): 50 mm
- Steel grade: 1.4122 / 3H17M
Availability:
available
Dispatched within: 5 days
Stainless steel round bar Diameter 50 mm in grade 1.4122 / 3H17M 140cm
- Length: 140 cm
- Outside diameter (OD): 50 mm
- Steel grade: 1.4122 / 3H17M
Availability:
available
Dispatched within: 5 days
Stainless steel round bar Diameter 50 mm in grade 1.4122 / 3H17M 150cm
- Length: 150 cm
- Outside diameter (OD): 50 mm
- Steel grade: 1.4122 / 3H17M
Availability:
available
Dispatched within: 5 days
Stainless steel round bar Diameter 50 mm in grade 1.4122 / 3H17M 160cm
- Length: 160 cm
- Outside diameter (OD): 50 mm
- Steel grade: 1.4122 / 3H17M
Availability:
available
Dispatched within: 5 days
Stainless steel round bar Diameter 50 mm in grade 1.4122 / 3H17M 170cm
- Length: 170 cm
- Outside diameter (OD): 50 mm
- Steel grade: 1.4122 / 3H17M
Availability:
available
Dispatched within: 5 days
Stainless steel round bar Diameter 50 mm in grade 1.4122 / 3H17M 180cm
- Length: 180 cm
- Outside diameter (OD): 50 mm
- Steel grade: 1.4122 / 3H17M
Availability:
available
Dispatched within: 5 days
Stainless steel round bar Diameter 50 mm in grade 1.4122 / 3H17M 190cm
- Length: 190 cm
- Outside diameter (OD): 50 mm
- Steel grade: 1.4122 / 3H17M
Availability:
available
Dispatched within: 5 days
Stainless steel round bars 1.4122
Stainless steel round bars 1.4122 are cylindrical bars made from a martensitic, heat‑treatable stainless steel. They are designed for applications where higher hardness and wear resistance are required than those offered by austenitic grades, while still providing basic corrosion resistance typical of stainless steels. These bars are sold in various diameters and lengths and are commonly supplied in annealed (soft) condition for machining or in a quenched and tempered state for higher strength and wear resistance.
What is 1.4122 (technical identification)
The designation 1.4122 is an EN/European material number identifying a martensitic stainless steel grade. In trade it is generally referred to as a martensitic stainless (or simply “martensitic steel”). In international practice, martensitic stainless grades are often compared with members of the AISI/ASTM martensitic families (for example the AISI 410/420 range), but exact equivalence can vary — always consult the material datasheet or certificate to confirm a direct match. In the UK and across Europe the EN number (1.4122) is the standard reference used on drawings and certificates.
Key properties
- Martensitic, heat-treatable — can be quenched and tempered to achieve a wide range of hardness and strength levels.
- Wear resistance — when hardened, offers good resistance to abrasion and mechanical wear.
- Moderate corrosion resistance — better than plain carbon steels but lower than austenitic (300 series) grades; suitable for many engineering environments but not for highly corrosive or marine-exposed parts without protective measures.
- Magnetic — like most martensitic grades, it is magnetic in both annealed and hardened conditions.
- Machinability and finishing — good machinability in the annealed state; can be turned, milled and ground to tight tolerances; polishable to a smooth finish.
- Weldability — limited compared with austenitic grades; welding is possible but often requires careful procedure and post‑weld heat treatment to avoid cracking.
Typical forms and processing
Round bars 1.4122 are available as bright/turned bars or ground bars in a range of diameters. They can be supplied in the annealed condition for easier machining, or pre‑hardened and tempered for parts needing higher strength and wear resistance. Common processing options include cutting to length, centreless grinding, and surface polishing. Heat treatment (quench & temper) is used to adjust hardness and toughness for the intended application.
Applications and industries
Stainless steel round bars 1.4122 are used across many sectors where hardness and wear resistance are important alongside some corrosion resistance. Typical applications include:
- Automotive: shafts, pins, valve components and small mechanical parts.
- Tooling and engineering: tool parts, punches, dies, and wear components.
- Manufacturing and machinery: spindles, sliders, bushings and shafts.
- Knife and cutlery industry: blades and components that require hardenable steel.
- Offshore and marine-related equipment (limited): components used in less aggressive seawater exposure when additional surface protection is applied.
- Hobbyist and garage engineering: shafts, axles and custom-machined parts for repairs or prototypes.
Who should choose round bars 1.4122?
This grade is suitable for engineers, machinists, toolmakers, small manufacturers, maintenance departments and hobbyists who need a stainless material that can be heat treated for high hardness and offers good wear resistance. It is a practical choice when higher strength and abrasion resistance are required but full corrosion resistance of austenitic grades is not essential.
Buying guidance
When selecting stainless steel round bars 1.4122, consider the required final hardness, whether parts will need post‑weld heat treatment, and the operating environment (corrosive, marine, food contact, etc.). Ask for the material certificate (EN or EN/BS certificate) to confirm chemical analysis and heat‑treatment condition. If you need a precise cross‑reference to an AISI/UNS designation for specification purposes, check the supplier’s technical datasheet — martensitic grades are often compared with the AISI 410/420 family but direct matches depend on composition and heat treatment.
Why buy from us
We specialise exclusively in stainless, acid-resistant and heat-resistant steels, so our stock and expertise are focused on grades like 1.4122. We can supply round bars in a variety of diameters and lengths, offer cut‑to‑size service and provide material documentation on request to support quality control and traceability.
If you need assistance choosing the right diameter, heat‑treatment condition or finishing option, contact our technical sales team — we can help match the stainless steel round bars 1.4122 to your application requirements.