Page 15 - ICGE VII - ABSTRACT BOOK

INTERNATIONAL CONFERENCE ON GLOBAL EDUCATION VIII
“Visioning the Future of Education”

GRADE IDENTIFICATION OF FERROS MATERIAL POPE USING
PSITIVE MATERIAL IDENTIFICATION, REPLICATION AND VICKERS
HARDNESS TESTING TECHNIQUES

Munirah Othman, Ahmad Khairil Abdul Jabar

(munirah.othman@polisas.edu.my, ahmad.khairil@polisas.edu.my)

Abstract

The purpose of the study is to identify the grade of ferrous material pipe using methods
recommended by international codes and standards. Identification would enable the
suitable use of the pipes according to material grade. Six ferrous material pipes
samples were used. Visual inspection was done to generally verify sample material as
reference for interpretation and comparison with international codes and standards.
Samples were labeled S1, S2, S3, S4, S5 and S6. S1 and S5 are carbon steel. S2, S3,
S4 and S6 are stainless steel. For chemical composition, x-ray fluorescence was used
for stainless steel and optical emission spectroscopy for carbon steel. Results were
compared with nominal compositions in Ferrous Material Specifications. Hardness
test was carried out using Standard Test Method for Vickers Hardness of Metallic
Materials with 10 kgf load. Results were converted to tensile strength and compared
with minimum specified tensile strength also in Standard Test Method for Vickers
Hardness of Metallic Materials. Replication test for microstructure was in accordance
with Standard Practice for Production and Evaluation of Field Metallographic
Replicas and results were compared with Metal Handbook Volume 9 (Metallography
and Microstructures). The grades of the pipe samples were successfully identified. S1
was found to be Grade D carbon-manganese steel, S2 was super austenitic stainless
steel, S3 was super duplex stainless steel, S4 was duplex stainless steel, S5 was SA
333 Gr 6 and S6 was 304 stainless steel.

Keywords: ferrous material, chemical composition, mechanical properties,
replication

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