High-Hardness Steel Product and Method of Manufacturing the Same
OwnerMagnus Larsson, Magnus Gladh +4inventors
InventorsMagnus Larsson, Magnus Gladh, Mikko Hemmilä, Tommi Liimatainen, Esa Virolainen, Pasi Suikkanen
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Abstract
Described is a hot-rolled steel strip product including a composition consisting of, in terms of weight percentages, 0.14% to 0.35% C, 0% to 0.5% Si, 0.05% to 0.40% Mn, 0.1% or less Al, 0.1% to 0.4% Cu, 0.2% to 0.9% Ni, 0.2% to 0.9% Cr, 0.2% or less Mo, 0.005% or less Nb, 0.035% or less Ti, 0.05% or less V, 0.0005% to 0.0050% B, 0.025% or less P, 0.008% or less S, 0.01% or less N, 0.01% or less Ca, and the remainder being Fe and inevitable impurities, wherein the steel product has a Brinell hardness in the range of 420 to 580 HBW.
Claims9
A hot-rolled steel strip product comprising a composition consisting of, in terms of weight percentages (wt. %):
- C 0.14-0.35,
- Si 0-0.5,
- Mn 0.05-0.40,
- Al 0-0.1,
- Cu 0.1-0.4,
- Ni 0.2-0.9,
- Cr 0.2-0.9,
- Mo 0-0.2,
- Nb 0-0.005
- Ti 0-0.035
- V 0-0.05
- B 0.0005-0.0050,
- P 0-0.025,
- S 0-0.008,
- N 0-0.01,
- Ca 0-0.01,
- remainder Fe and inevitable impurities, wherein the steel product has a Brinell hardness in the range of 420-580 HBW.
Dependencies are inferred from the claim text.