ASTM A194 GRADE 2H NUTS
ASTM A194 Grade 2H Nuts Sample MTC Certificate
Access a comprehensive, professionally formatted Material Test Certificate according to EN 10204-2004: 3.1 for High-Temperature Carbon Steel Heavy Hex Nuts (ASTM A194 Grade 2H). Inspect the exact documentation your QA and engineering teams will receive with every Ananka Fasteners order.
What's Inside This A194 Gr 2H MTC Certificate
This sample mill test certificate mirrors the rigorous QA documentation package standard for high-strength, quenched and tempered carbon steel nuts meant for high-pressure and elevated-temperature service shipped from Ananka Fasteners Pvt Ltd.
- Full Traceability: Certified with TC No.: C92/26-XX and corresponding ASTM specifications.
- Material Chemistry: Detailed carbon steel breakdowns verifying optimal Carbon (0.40% min) and Manganese content, providing the structural foundation required for robust fastening in critical piping systems.
- Mechanical & Proof Load Testing: Comprehensive reporting of critical fastener metrics, primarily Proof Load capability (min 1034 MPa / 150,000 psi) and surface Hardness (typically 24 to 35 HRC) to prevent galling.
- Heat Treatment Tracking: Explicit verification of the quenching and high-temperature tempering (minimum 850°F / 455°C) process vital to achieving the "2H" strength profile.
- Quality Compliance: 100% visual and dimensional inspection carried out to guarantee perfectly formed threads and flat bearing surfaces.
Live Preview: ASTM A194 Grade 2H Data
Review the standard parameters and layout before downloading the full document.
TC Number
C92/26-XX
TC Date
12.06.20XX
Material Spec
ASTM A194 GRADE 2H
Nut Shape / Size
Heavy Hex Nut / M24
Dimensions / Item
Heavy Hex Nut M24-3.0P
Quantity
250.00 NOS
Chemical Composition %
| C | Mn | P | S | Si |
|---|---|---|---|---|
| 0.46 | 0.78 | 0.022 | 0.015 | 0.24 |
| Min: 0.40 | Max: 1.00 | Max: 0.040 | Max: 0.050 | Max: 0.40 |
Mechanical Properties
| PROOF LOAD STRESS (MPa) | HARDNESS (HRC) |
|---|---|
| 1090.50 | 28, 29, 27 |
| Min: 1034 | Min: 24 Max: 35 |
Standard References & Compliance
Our MTC certificates map to the demanding industrial standards for high-temperature pipeline and structural fasteners. The test reports confirm compliance with As Per ASME/ASTM A194 Grade 2H 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 performed. |
| Dimensional Accuracy | All dimensions, threads, and bearing surface tolerances conform to ASME B18.2.2. |
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
- Quenched & Tempered
- Tempering Temperature: Min 850°F (455°C)
Testing Conditions
- Proof load & hardness testing carried at room temperature 25°C
- 100% visual inspection carried out
Technical FAQs — ASTM A194 Grade 2H MTC Certificate
Why are A194 Grade 2H nuts specified for high-temperature and high-pressure service?
Grade 2H nuts are manufactured from high carbon steel that is heavily quenched and tempered. This process grants them exceptional strength and hardness, ensuring they maintain clamping force and resist galling or seizing even when exposed to severe pipeline pressures and elevated temperatures.
What heat treatment methodology is tracked on this certificate?
The MTC logs a Quench and Temper phase. ASTM A194 specifically requires that Grade 2H nuts be reheated above their critical temperature, quenched in a liquid medium, and then tempered at a minimum temperature of 850°F (455°C). This careful thermal management provides the ideal balance of high tensile strength and ductility.
Why does the certificate highlight Proof Load rather than Tensile Strength?
Nuts are internally threaded fasteners, meaning their primary failure mode is thread stripping rather than breaking like a bolt. Therefore, standard compliance focuses on Proof Load Stress—the specific axial load the nut can support without experiencing permanent thread deformation. For Grade 2H heavy hex nuts, this is rigorously tested and logged.