![]() ![]() Both tensile strength and yield point are measured in pounds per square inch (PSI). Tensile strength is the force required for the material to break or fail. Yield point is where the stress of a force permanently changes the shape of the material. Physical Properties is determined through testing the mechanical properties that appraise a material’s tensile strength (PSI), yield point (PSI), elongation, reduction of area percentage, and Brinell hardness number (BHN). On the left center of our MTR is Physical Properties. The chemical breakdown of the steel determines if the product is fit for purpose according to the relevant ASME or ASTM standards. This is the percentage values of Carbon (C ), Manganese (Mn), Phosphorus (P), Sulfur (S), Silicon (Si), Chromium (Cr), Nickel (Ni), Molybdenum(Mo), Vanadium (V), and Copper (Cu). In the center of our MTR you will find the Chemical Analysis. Chemical attributes include the percentage of elements prescribed in the acceptance range. This piece undergoes destructive testing per ASME code to obtain physical traits. The heat code is stamped or engraved into the material like DNA.Īlong with the “heat”, mills forge an additional piece known as the “test piece” or “coupon”. Heat codes identify the physical and chemical composition of our flanges and custom materials. This code or “heat” is created from a single grouping of forgings generated from the same piece of billet in one forging session. Heat Number)Įvery MTR will include a heat code for identification. ASME uses the “SA” prefix while ASTM includes the letter “A”. ![]() Most metals used in pressure application are required to meet a specific set of standards. The product specification refers to the ASME and ASTM standards applied to a material. Depending on the raw material you may see thickness as well. You will see the number of items with the same specification such as inside diameter, governing specification (AWWA, ANSI, ASME, etc.) and the product (blind, ring, weld neck, slip-on, etc.) classification. ![]() The next section pertains to the product quantity and item description. Step 2: Product Description and Specification You will see details such as customer purchase order information, sales order number, and tag number if applicable. Step 1: Customer DetailsĪt the top of the page you will see details relating the manufacturer as well as the customer. However, once you know the basic components you will be a pro in no time. How to interpret an MTR?įor first time viewers of a MTR it can be overwhelming upon first glance. Though some companies may have a different design for their reports, the information on them is typically the same. Here is a sample MTR from Coastal Flange: Coastal Flange sends Material Test Reports with every order or an email copy if specified or requested. An MTR is a document used in the metal industry that certifies as a guarantee from the manufacturer to the supplier or end user. A material test report (MTR) quantifies the specific chemical and physical properties of a particular manufactured product. ![]()
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