Thermoplastic elastomer composition and shaped article thereof

A thermoplastic elastomer composition obtained by dynamically crosslinking:

• 100 parts by mass of an ethylene/α-olefin/non-conjugated polyene copolymer (A);
• 20 to 80 parts by mass of a propylene polymer (B) having a melt flow rate (measured at 230° C. under 2.16 kg load in accordance with ASTM D 1238-65T) of 1 to 100 g/10 min;
• 10 to 50 parts by mass of an inorganic filler (C);
• and
• a crosslinking agent (D),
• wherein the inorganic filler (C) consists of at least one selected from the group consisting of calcium carbonate, barium carbonate, magnesium carbonate, zinc carbonate, calcium sulfate, barium sulfate, magnesium sulfate, calcium phosphate, zinc oxide, iron oxide, calcium oxide, magnesium oxide, aluminum oxide, titanium oxide, barium oxide, calcium silicate, clays, kaolin, talc, silicas, diatomaceous earth, mica, asbestos, glass fibers, glass beads, Shirasu balloons, silicic acid clay, zeolites, tungsten sulfide, molybdenum sulfide, graphite and carbon black,
• wherein the crosslinking agent (D) is an organic peroxide, and
• wherein an elongation at break is 200% or more and less than 450% (as measured in accordance with JIS K 6251 with respect to a 2 mm thick sheet of the thermoplastic elastomer composition).