ASTM A554 Stainless Steel Square Tube
Grades: MT 304/304L,MT 316/316L,MT310/310S...
Size: O.D:9.5mm-139.7mm,WT:.0.6-3.05mm
length: standard 6 meters or cut to length size
Product Overview
ASTM A554 stainless steel square tubes are high-quality welded mechanical tubing, widely used in architectural, automotive, and industrial applications, where both aesthetics and performance are required.
Chemical Composition
| Element | Composition % | Impact |
|---|---|---|
| Chromium | 18.0–20.0 | Provides corrosion resistance |
| Nickel | 8.0–10.5 | Maintains austenitic stability |
| Carbon | ≤0.08 | Ensures weldability |
| Manganese | ≤2.0 | Provides strength |
Mechanical Properties
| Property | Value | Testing Standard |
|---|---|---|
| Tensile Strength | ≥515 MPa | ASTM A370 |
| Yield Strength | ≥205 MPa | ASTM A370 |
| Hardness | ≤90 HRB | ASTM E18 |
| Elongation | ≥40% | ASTM A370 |
Size & Specification Reference
| Size (mm) | Wall Thickness (mm) | Standard Length |
|---|---|---|
| 20x20 | 1.0–3.0 | 6 m |
| 50x50 | 1.5–5.0 | 6 m |
| 100x100 | 2.0–8.0 | 6 m |
Customization Options
- Cutting to custom lengths.
- Surface finishes: polished, pickled, matte, or brushed.
- OEM packaging & private labeling for brand-specific requirements.
- Tailored mechanical properties or heat treatments as needed.
Quality & Certifications
- Standards Compliance: ASTM A554, recognized international standards
- Certifications: ISO 9001:2015 quality management system
- Third-Party Approvals: TÜV, SGS, BV, DNV, ABS, LR, etc.
- Material Test Certificates (MTC): EN 10204 3.1 available on request
- Inspection & Testing: Chemical composition, mechanical property testing, dimensional inspection, non-destructive testing
Packaging & Delivery
- Standard packaging: wooden crates or protective sleeves to prevent damage.
- MOQ: Flexible based on size and wall thickness.
- Lead times adapted to customer requirements.
- Supports custom packaging, labeling, and private branding.
- Logistics partners for samples or small orders: DHL, FedEx, UPS.
FAQ
Q1: What grades of stainless steel are available for ASTM A554 square tubes?
A: Mostly 304 and 316 austenitic stainless steel, suitable for outdoor, architectural, and food-grade applications.
Q2: Are the tubes welded or seamless?
A: ASTM A554 square tubes are welded mechanical tubing, manufactured with high-quality TIG or laser welding.
Q3: Can the tubes be cut to custom lengths?
A: Yes, we provide custom cutting services to meet project-specific requirements.
Q4: What surface finishes are offered?
A: Surface options include mill finish (2B), brushed (No.4), mirror polish (BA), and powder-coated finishes (RAL colors).
Q5: Do you provide material test certificates (MTC) or third-party inspection?
A: Yes, MTC and third-party inspections by SGS, TÜV, BV, or other accredited agencies are available upon request.
Q6: What is the lead time for standard and custom orders?
A: Standard sizes are typically available from stock for fast delivery; custom sizes depend on order quantity and specifications, with MOQ starting at 500 kg.
Contact us
Mob: +86-13772502581
Email: judesteel@juqing.hk
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