For sure, you'd likely have heard of chrom-molly steels. Got example, 4140 is a 1% chromium - molybdenum medium hardenability general purpose high tensile stee

For sure, you'd likely have heard of chrom-molly steels. Got example, 4140 is a 1% chromium - molybdenum medium hardenability general purpose high tensile steel - generally supplied hardened and tempered in the tensile range of 850 - 1000 Mpa. Three to four times greater tensile strength, so two 127mm (5") diameter rods would do it at 1000 MPa.