Stainless Steel 1.4122 Hex Bars are celebrated for their impressive strength, wear resistance, and hardness, making them perfect for tough mechanical and industrial tasks. This martensitic stainless steel grade, which is akin to AISI 420, delivers dependable performance in settings that demand durability and moderate resistance to corrosion. The hexagonal shape not only improves grip but also enhances machinability and precision during fabrication, making these bars a go-to for creating fasteners and components that require close tolerances. Their ability to hold up under stress, along with good polishability and heat-treatable features, makes 1.4122 hex bars a top choice in the automotive, tooling, and engineering fields.
These hex bars contain 12–14% chromium and have optimized carbon levels that boost their hardness and strength after heat treatment. The alloy boasts a tensile strength of around 700–850 MPa and a yield strength of 450–550 MPa when tempered. It shows excellent wear and abrasion resistance, maintaining stable mechanical performance even under load. With moderate corrosion resistance, good machinability in the annealed state, and the capacity to achieve high hardness through quenching and tempering, 1.4122 is well-suited for high-strength applications where durability is essential.
Standard : AISI, ASTM, BS, DIN, GB, JIS
Specification : ASTM A276 / ASME SA276
Diameter : 6mm-500mm
Width: 100-4200mm
Length : 1 to 6 meters & as per customer’s requirement.
Range : 3 MM TO 350 MM DIA
Dimensions: 5.5MM – 1100MM
Form : Round Bars, Square Bars
Materials Grades: Stainless Steel 1.4122
| Grade | C | Si | Mn | P | S | Cr | Mo | N | Others |
| SS 1.4122 | 0.33-0.45 | max 1.00 | max 1.5 | max 0.040 | max 0.015 | 15.5-17.5 | 0.80-1.30 | max 1.00 | – |
| Yield Rp0.2 (MPa) | Tensile Rm (MPa) | Impact KV/Ku (J) | Elongation A (%) | Reduction in cross section on fracture Z (%) | As-Heat-Treated Condition | Brinell hardness (HBW) |
| 869 (≥) | 926 (≥) | 41 | 44 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 444 |
| EN | DIN | AFNOR |
| 1.4122 | 1.4122 – X 39 Cr Mo 17 1 | Z 38 CD 16-01 |
Stainless Steel 1.4122 hex bars are relatively environmentally friendly, as they are recyclable and durable. However, the production process involves energy consumption and emissions, which can impact the environment to some extent.
The typical size range for Stainless Steel 1.4122 hex bars varies from 6 mm to 100 mm in diameter, with lengths commonly ranging from 1000 mm to 4000 mm, depending on specifications.
Yes, Stainless Steel 1.4122 flat bars can be welded, though preheating and post-weld heat treatment may be necessary to reduce the risk of cracking and ensure optimal weld quality.
Stainless Steel 1.4122 Hex Bars are frequently used to manufacture fasteners, nuts, bolts, valve parts, pump shafts, and other mechanical components that require high wear resistance. They find extensive application in the automotive industry for structural components, transmission parts, and fittings that face friction and stress. Moreover, they are ideal for crafting precision tools, surgical instruments, cutlery, machine fittings, and components for textile machinery. Their hardness, dimensional stability, and reliable performance make 1.4122 hex bars a great fit for a variety of engineering applications that need a long service life and consistent mechanical strength.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
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