STAINLESS STEEL GRADE 309H (UNS S30909) – MTC
Stainless Steel 309H Sample MTC Certificate
Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1 for Stainless Steel Grade 309H (ASTM A276 / A479 UNS S30909). Inspect the exact documentation your QA and engineering teams will receive with every Ananka Fasteners order.
What's Inside This SS 309H MTC Certificate
This sample mill test certificate mirrors the rigorous QA documentation package standard for highly alloyed, heat-resistant austenitic stainless steel orders engineered for elevated temperature strength, shipped from Ananka Fasteners Pvt Ltd.
- Full Traceability: Certified with TC No.: S94/26-XX and corresponding ASTM specifications to ensure seamless part-tracking.
- High-Temperature Chemistry: Detailed breakdowns verifying the high Chromium (22.00% - 24.00%) and Nickel (12.00% - 15.00%) content, providing exceptional resistance to oxidation up to 1038°C (1900°F).
- High Carbon Verification (The 'H' Grade): Explicit verification of the strictly controlled elevated carbon content (0.04% - 0.10%). This is the defining characteristic of 309H, which maximizes high-temperature creep resistance and structural integrity compared to standard or low-carbon (309S) grades.
- Mechanical Properties: Comprehensive reporting of Tensile Strength (Min 515 MPa), Yield Strength (Min 205 MPa), Elongation (Min 40%), and Hardness (Max 95 HRB).
- Quality Compliance: 100% visual inspection carried out and verified free from defects and radioactive contamination.
Live Preview: Stainless Steel 309H MTC Data
Review the standard parameters and layout before downloading the full document.
TC Number
S94/26-XX
TC Date
22.09.20XX
Material Spec
ASTM A276 / A479 UNS S30909
Bar Shape / Size
Round Bar / 20 mm
Dimensions / Item
Stud Bolt M20-2.5P x 150 mm
Quantity
150.00 NOS
Chemical Composition %
| C | Mn | P | S | Si | Cr | Ni | Fe |
|---|---|---|---|---|---|---|---|
| 0.06 | 1.45 | 0.022 | 0.005 | 0.55 | 23.40 | 13.60 | Rem |
| Min: 0.04 Max: 0.10 |
Max: 2.00 | Max: 0.045 | Max: 0.030 | Max: 1.00 | Min: 22.00 Max: 24.00 |
Min: 12.00 Max: 15.00 |
Rem |
Mechanical Properties
| TENSILE STRENGTH (Mpa) | YIELD STRENGTH 0.2% Offset (Mpa) | % ELONGATION (GL-50mm) | HARDNESS (HRB) |
|---|---|---|---|
| 590.20 | 275.40 | 44.50 | 85, 86, 84 |
| Min: 515 | Min: 205 | Min: 40 | Max: 95 |
Standard References & Compliance
Our MTC certificates map to the demanding industrial standards for structural integrity in extreme heat environments. The test reports confirm compliance with As Per ASME/ASTM A276 / A479 UNS S30909 EDT. 20XX with respect to the tests carried out.
| Standard / Requirement | Confirmation on Certificate |
|---|---|
| Visual Inspection | 100% visual inspection carried out & found free from defects. |
| Safety Requirements | Material is free from radioactive contamination. |
| Weld Repairs | No weld repair Perform. |
| Dimensional Accuracy | All Dimensions are as per PO Specification. |
Certification Details
We confirm that above mentioned Items was Manufactured, Sampled, Tested and Inspected in accordance with the subjected Customer's Purchase Order and as applicable Drawings, Material Specifications, Codes & Standards and the results of the items have been determined to meet the users' requirements.
Documentation Standard
- EN 10204-2004: 3.1 Standard
- Free from radioactive contamination
- Certified ISO 9001: 2015 Company
Heat Treatments
- Solution Annealed
- Quenching Medium: Water quenched
Testing Conditions
- Chemical, Mechanical & hardness test carried at room temperature 25°C
- 100% visual inspection carried out
Technical FAQs — Stainless Steel 309H MTC Certificate
Why is the "H" designation (High Carbon) critical for this material?
The "H" in 309H denotes a strictly controlled carbon content between 0.04% and 0.10%. As verified in the chemical composition table of this MTC, this elevated carbon range is essential for maximizing the alloy's creep resistance and structural strength at extremely high temperatures. Unlike the 309S (low carbon) variant which prioritizes weldability, 309H is engineered for mechanical load-bearing applications in thermal environments.
What is high-temperature "creep" and how does 309H prevent it?
Creep is the tendency of a solid material to slowly move or deform permanently under the influence of persistent mechanical stresses, especially when exposed to severe heat. The specific chemical balance of 309H—specifically the elevated carbon acting as a strengthening agent within the grain boundaries—significantly reduces this deformation rate, making it ideal for furnace hardware, boiler baffles, and structural kiln supports.
What are the typical operating temperatures for 309H fasteners?
Thanks to its robust 23% chromium and 13.5% nickel composition, Stainless Steel 309H offers phenomenal oxidation resistance. It is commonly utilized in continuous high-heat service environments at temperatures reaching up to 1038°C (1900°F). It performs exceptionally well even in atmospheres containing moderate amounts of sulfur, provided the environment remains oxidizing.