An automobile undercarriage part of the present invention is an automobile undercarriage part including a welded joint in which a first steel sheet and a second steel sheet are overlapped and a fillet weld is formed between an end surface of the first steel sheet and a surface of the second steel sheet, in which a chemical composition of a weld metal that forms the welded joint contains, with respect to a total mass of the weld metal, by mass%, C: 0.02% to 0.20%, Si: more than 0% to less than 0.10%, Mn: 0.3% to 2.0%, Al: 0.002% to 0.30%, Ti: 0.005% to 0.30%, P: more than 0% to 0.015%, and S: more than 0% to 0.030%, and the following formula (1) and formula (2) are satisfied. [Al] + [Ti] > 0.05···· Formula (1) 7 × [Mn] - 112 × [Ti] - 30 × [Al] ≤ 4.0 ···· Formula (2)
AUTOMOBILE UNDERCARRIAGE PART
FAHRGESTELLTEIL FÜR AUTOMOBILE
ÉLÉMENT CHÂSSIS D'AUTOMOBILE
2024-01-10
Patent
Electronic Resource
English