Glass composition for glass fibers, glass fibers, glass fiber fabric, and glass fiber-reinforced resin composition

A glass composition for glass fiber comprising:

• SiO2 in a range of 52.0% by mass or more and 57.5% by mass or less;
• B2O3 in a range of 19.5% by mass or more and 25.5% by mass or less;
• Al2O3 in a range of 8.0% by mass or more and 13.0% by mass or less;
• MgO in a range of 0% by mass or more and 2.0% by mass or less;
• CaO in a range of 0% by mass or more and 4.9% by mass or less;
• SrO in a range of 0.5% by mass or more and 6.5% by mass or less;
• TiO2 in a range of 0.1% by mass or more and 3.0% by mass or less;
• and
• ZnO in a range of 0% by mass or more and 0.5% by mass or less with respect to a total amount, wherein
• a ratio of a content of Al2O3 (% by mass) to a content of B2O3 (% by mass), (Al2O3/B2O3), is in a range of 0.35 to 0.54, and
• a content SI (% by mass) of SiO2, a content B (% by mass) of B2O3, a content M (% by mass) of MgO, a content C (% by mass) of CaO, a content SR (% by mass) of SrO, and a content T (% by mass) of TiO2 satisfy following formula (1):
• 6.90≤100×(B/SI)2×{SR/(C+SR)}2/3×{T/(M+T)}1/2≤12.30 (1).