Sheets in steel grade 1.4034 / 4H13

Sheets in steel grade 1.4034 / 4H13 are stainless steel sheets made from a martensitic alloy often known by the old designation X6Cr13. This grade contains roughly 12–13% chromium with a low carbon content and is supplied as cold- or hot-rolled sheet for applications that require moderate corrosion resistance combined with good hardenability and wear resistance.

What is 1.4034 / 4H13 (X6Cr13)?

1.4034 is the EN/Werkstoff number for a martensitic stainless steel; 4H13 is a common Cyrillic/GOST-style equivalent notation (4Х13). In everyday terms it is often referred to as a type of stainless steel similar to the AISI 420 family (so you may see references to “420-type” steels). As a martensitic grade it is magnetic, can be hardened by heat treatment, and provides better resistance to oxidation and staining than plain carbon steel but less corrosion resistance than austenitic grades such as 304 or 316.

Key properties

• Corrosion resistance: Moderate — suitable for indoor environments and mildly corrosive atmospheres; not the best choice for aggressive chloride environments (e.g. unprotected marine exposure).
• Mechanical behaviour: Good strength and wear resistance after quenching and tempering; in the annealed state it is easier to machine and form.
• Hardening: Can be heat treated to increase hardness and wear performance.
• Magnetic: Yes — typical of martensitic stainless steels.
• Fabrication: Weldable, but welding can affect hardness and corrosion resistance; pre- and post-weld heat treatment is often recommended for critical parts.

How sheets in 1.4034 / 4H13 are used

Sheets made from 1.4034 / 4H13 are used when a balance of strength, wear resistance and reasonable corrosion performance is required. Typical uses include:

• Cutlery and kitchen knives (where a harder edge is needed).
• Wear parts, shafts and bushes where moderate corrosion protection is acceptable.
• Valves, fittings and small pump components for non-aggressive environments.
• Automotive components and brackets where hardenable stainless is beneficial.
• Small workshop and garage projects where robustness is needed without the premium cost of high-alloy austenitic grades.

Industries and sectors

Sheets in 1.4034 / 4H13 are used across a range of sectors, for example:

• Manufacturing and engineering workshops
• Automotive and transport (components, brackets, housings)
• Toolmaking and cutlery
• Light construction and architectural fittings (indoor use)
• Equipment for food processing when specific properties are needed and corrosion exposure is limited

Note: for heavy offshore or aggressive marine environments, austenitic grades such as 316 are normally preferred because they offer superior resistance to chlorides.

Fabrication, welding and heat treatment — what to expect

Working with 1.4034 sheets:

• Cutting & forming: Can be sheared, laser cut or press-braked; in the annealed condition forming is easier. Excessive cold work will increase hardness and may require stress relief.
• Machining: Good machinability in the annealed condition; performance improves with proper tooling and cutting parameters.
• Welding: Weldable, but welded joints can be prone to hardness gradients and cracking unless suitable procedures are used. Pre-heating and post-weld heat treatment are often recommended for structural or wear-critical parts.
• Heat treatment: Can be hardened by quenching from the austenitising temperature and tempered to achieve desired balance of hardness and toughness.

Who should choose sheets in 1.4034 / 4H13?

If you need a stainless sheet that can be hardened for improved wear resistance, is magnetic, and provides reasonable corrosion protection without the cost of high-alloy austenitic steels, 1.4034 / 4H13 is a practical choice. It suits engineers, toolmakers, small fabrication shops, automotive suppliers and DIY enthusiasts working on indoor or mildly corrosive projects. For prolonged exposure to salt water or highly acidic/chloride environments, consider higher-corrosion-resistance grades such as 316.

Summary

Sheets in steel grade 1.4034 / 4H13 (X6Cr13; roughly comparable to 420-type steels) are martensitic stainless-steel sheets offering a useful combination of hardenability, wear resistance and moderate corrosion resistance. They are a cost-effective option for many industrial, automotive and workshop applications where moderate corrosion resistance and the ability to harden the material are required.