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Experience Precise Drop Weight Testing
Fig.1Drop-weight test specimens: Side view. Lower photo shows close-up of weld-bead and notch
Drop-Weight Test
Fracture Toughness as per ASTM E208-17
Subodh Material Technologists specializes in the drop-weight test (often referred to as 'Pellini' test) which was developed at the Naval Research Laboratory, Washington DC, as a simple method to determine the nil-ductility transition temperature (NDTT).
Drop-Weight Test:
The ASTM E208 Drop-Weight Test is a crucial method for determining the Nil-Ductility Transition Temperature (NDTT) of ferritic steels with a thickness of 5/8 inch or greater. Originally developed by the Naval Research Laboratory in 1952 and published under the Department of the Navy document NAVSHIPS-250-634-3, this test has become a benchmark for assessing the impact toughness of materials under various temperature conditions.
The drop-weight test specimen, depicted in Fig. 1, features a rectangular coupon with a brittle weld bead deposited on one face. Testing is performed across a range of temperatures, with the NDTT defined as the highest temperature at which a brittle crack propagates fully across one or both of the tension surfaces adjacent to the brittle weld bead.
Why Choose Subodh?
Industry First: SMT is the first commercial metallurgical laboratory to offer this specialized test facility under NABL accreditation.
Skilled Expertise: Our highly experienced and skilled technical staff can handle even the most complex testing requirements.
Precision Specimen Preparation: We ensure precise specimen preparation, tailored to customer specifications and standard requirements.
Quick Turnaround: We provide fast and efficient testing with minimal turnaround time.
Responsive Service: Our team is committed to providing prompt and reliable customer support.
State-of-the-Art Equipment: We utilize high-precision, high-accuracy machines to ensure the most reliable results.
Global Standards: Our tests adhere to international standards, industry best practices, and validated test methods, guaranteeing quality and consistency in every analysis.
Image of a Full Break specimen following a drop weight test for P2 Type at Subodh Material Technologists, Navi Mumbai, India, conducted at sub-zero temperatures.
Image of a Full Break specimen following a drop weight test for P2 Type at Subodh Material Technologists, Navi Mumbai, India, conducted at sub-zero temperatures.
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