Abstract: The present strain gauge includes a substrate having flexibility; and a resistor formed from a material containing at least one of chromium and nickel, on the substrate, wherein a first substance having a function of preventing crystal grains as the main component of the resistor from cohering, is added to the resistor.

Abstract: To provide a highly corrosion-resistant stainless steel component made of martensitic stainless steel achieving both high corrosion resistance and high hardness without containing ferrite at a surface layer portion. The highly corrosion-resistant stainless steel component is made of martensitic stainless steel containing, by weight, from 0.35 to 0.43% of C, 0.5% or less of Si, 0.5% or less of Mn, 0.04% or less of P, 0.04% or less of S, from 15 to 17% of Cr, from 0.1 to 0.3% of W, from 1.5 to 3.0% of Mo, from 0.001 to 0.005% of B, and from 0.12 to 0.18% of N, with the balance being Fe and an inevitable impurity. The matrix structure of the surface layer portion of the entire outer surface is a two-phase mixed structure containing retained austenite and martensite, and the surface hardness is HRC 57 or more.

Abstract: A strain gauge includes a substrate formed of resin and having flexibility and a functional layer formed of a metal, an alloy, or a metal compound, directly on one surface of the substrate. The strain gauge includes a resistor formed as a film that contains Cr, CrN, and Cr2N and into which an element contained in the functional layer is diffused. The resistor is provided on one surface of the functional layer. A first substance having a function of controlling growth of crystal grains as a main component of the resistor, is added to the resistor.

Abstract: The present strain gauge includes a substrate having flexibility; and a resistor formed from a material containing at least one of chromium and nickel, on the substrate, wherein a first substance having a function of controlling growth of crystal grains as the main component of the resistor, is added to the resistor.

Abstract: The present strain gauge includes a substrate having flexibility; and a resistor formed from a material containing at least one of chromium and nickel, on the substrate, wherein a first substance having a function of preventing crystal grains as the main component of the resistor from cohering, is added to the resistor.