钢 HV=200 → HB≈192,HRB≈92,HRC 超范围 碳钢/合金钢维氏 200。插值得 HB=192、HRB=92.0。HV 低于 ~240(退火软钢)时 HRC 无定义,输出 out of range。{"result":"Steel, input HV=200.0. HV=200.0, HB=192.0, HRC=out of range (valid for hardened steel, HV ≥ 240), HRB=92.0. ASTM E140 linear interpolation; indicative only, not for acceptance testing.","metadata":{"input":{"material":"steel","inputScale":"HV","value":200},"result":{"material":"steel","HV":200,"HB":192,"HRC":"out of range","HRB":92}}}
钢 HRC=30 → HV≈303,HB≈288,HRB 超范围 淬火钢洛氏 C 30。反算 HV ≈ 303、HB ≈ 288。HV 高于 ~240 时 HRB 无定义,输出 out of range。{"result":"Steel, input HRC=30.0. HV=303.0, HB=288.0, HRC=30.0, HRB=out of range (valid for soft steel, HV < 240). ASTM E140 linear interpolation; indicative only, not for acceptance testing.","metadata":{"input":{"material":"steel","inputScale":"HRC","value":30},"result":{"material":"steel","HV":303,"HB":288,"HRC":30,"HRB":"out of range"}}}