PSI - Issue 27

Eko Surojo et al. / Procedia Structural Integrity 27 (2020) 14–21 Surojo et al. / Structural Integrity Procedia 00 (2019) 000 – 000

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self-shielded fl ux-cored wire

9.

Chen et al. (2020)

Low carbon Q235 steel and high strength low alloy E40 steel plate

In the CGHAZ area, there are some LM (Lath Martensite) and AM (acicular martensite) in the Low carbon Q235 steel while in the high strength low alloy E40 steel plate, there are some SPF (side plate ferrite) and AF (Acicular Ferrite).

High strength low alloy E40 steel plate has a higher crack sensitivity value than low carbon Q235 steel material.

3. Metallic material The metallic material is a material that has special properties that engineers usually use for engineering. Metallic materials are classified into two, namely ferrous and nonferrous metal (Callister, 2003). Ferrous metal is a metal that has the central element in the form of iron (Fe). This material is mainly used in the construction of engineering, e.g., powerplant equipment, shipbuilding, bridge construction, and other components. The nonferrous metal is a metal that contains little or no essential elements in the form of iron (Fe). Alloy elements from nonferrous metal materials are Copper (Cu), Aluminum (Al), Magnesium (Mg), Titanium (Ti), and others (Xue, et al., 2019). The alloying elements can affect the resulting weldability. If the elements are added to nonferrous materials, special methods are required for the welding process. Fydrych et al. (2013) research on weldability for ferrous metal. The material S355J2G3 in water condition while S500M steel in air and water condition. The welding process with MMA Process. Composition of chemical contained on material S355J2G3 and S500M steel, as shown in Fig. 3. The S355J2G3 steel consists of different Ferrite and Pearlite structures, while the S500M steel structure consists of several Ferrite grains of very different sizes and Pearlite structures, too, as shown in Fig. 4. a. b.

C, 0.17

Si, 0.018

Ce, 0.3

Ce, 0.44

Al, 0.039

Si, 0.35

Ti, 0.001

Al, 0.02

V, 0.054

Cu, 0.3

Nb, 0.056

S, 0.002

S, 0.014 Cr, 0.04 Ni, 0.077

P, 0.009

Mn, 1.38

Mn, 1.44

P, 0.014

Fig. 3. Composition of chemical contained on S355J2G3 and S500M steel (weight %) (Fydrych et al., (2013).

Fig. 4. Microstructure from S355J2G3 and S500M steel (Fydrych et al., 2013).