M4X70mm 200 SUS refers to a specific stainless steel alloy commonly specified in mechanical and industrial applications for its balanced strength and corrosion resistance. This designation typically aligns with international standards that define precise chemical limits and mechanical behavior.
Engineers and procurement teams rely on documented specifications to ensure the material meets performance expectations for components exposed to demanding environments. The following sections clarify key aspects of M4X70mm 200 SUS to support informed decision-making.
| Parameter | Value for M4X70mm 200 SUS | Unit | Standard Reference |
|---|---|---|---|
| Nominal Thickness | 4 | mm | EN 10088, ASTM A240 |
| Width | 70 | mm | Custom rolled formats |
| Length | 2000 | mmCoil slitting or cut lengths | |
| Material Grade | 200 Series Austenitic | - | AISI 201/202 family |
| Surface Finish | 2B or No.4 | - | Mill or brushed options |
Mechanical Properties and Tensile Behavior
Understanding the mechanical properties of M4X70mm 200 SUS is essential for selecting it in load-bearing configurations. The 200 series offers moderate tensile strength while maintaining formability, which makes it suitable for stamped or bent components where cost and weight are considerations.
Typical values include yield strength, tensile strength, and elongation that align with referenced test methods. These properties guide design margins and influence the selection of fasteners, supports, and joining techniques for assemblies.
Corrosion Resistance in Ambient Conditions
M4X70mm 200 SUS provides adequate corrosion resistance in many ambient settings, especially when surface finishes are appropriately specified. The chromium and nickel content within the 200 series helps form a passive layer that mitigates uniform rust in dry or mildly aggressive atmospheres.
However, compared with 300 series alloys, the lower nickel content may limit performance in chloride-rich environments, so engineers should evaluate exposure to moisture, salts, and cleaning agents during service life assessments.
Fabrication and Forming Guidelines
Fabrication of M4X70mm 200 SUS follows practices established for similar austenitic stainless steels, with attention to strain-hardening rates and heat-affected zones. Consistent tool paths, lubrication, and controlled bending radii help maintain surface integrity and dimensional accuracy during production runs.
Recommended forming sequences include preliminary forming, stress-relief measures when necessary, and final trimming operations that respect edge quality. Tooling designs should accommodate the material’s behavior under shear and bending to avoid cracking or excessive springback.
Applications and Industry Use Cases
M4X70mm 200 SUS is utilized across sectors where moderate strength, corrosion resistance, and cost optimization are balanced. Typical applications include architectural trim, cabinets, appliance components, and light-gauge structural elements where aesthetics and durability are both relevant.
Its standardized dimensions and availability in sheet or coil formats streamline sourcing for manufacturers, enabling predictable lead times and integration with existing production lines that handle comparable stainless grades.
Key Takeaways and Recommendations
- Verify grade-specific limits against applicable standards before finalizing specifications.
- Assess chloride exposure and humidity levels to determine suitability versus higher alloy options.
- Plan fabrication sequences to minimize strain localization and surface defects.
- Select surface finish and protective measures based on environmental exposure and cleaning protocols.
- Document mechanical test reports and material traceability for quality assurance and regulatory compliance.
FAQ
Reader questions
Is M4X70mm 200 SUS suitable for outdoor architectural cladding?
Yes, in sheltered or moderately exposed conditions with regular cleaning, where chloride exposure is not severe.
How does M4X70mm 200 SUS compare to 304 in corrosion resistance?
304 generally offers superior resistance to chlorides and stronger acids, while 200 series can perform adequately in less aggressive environments at lower cost.
Can M4X70mm 200 SUS be welded without intergranular corrosion risk?
Use low-carbon grades or post-weld treatments, as standard 200 series may be susceptible to sensitization; verify procedures with material data sheets.
What surface finish is recommended for M4X70mm 200 SUS in hygienic applications?
No.4 or brushed finishes provide smooth surfaces that ease cleaning; always confirm compliance with relevant sanitary standards for process equipment.