Iron-based alloy composition, parts produced from this composition and production method
AssigneesCoskunoz Kalip Makina Sanayi Ve Ticaret Anonim Sirketi, Ober Arge Teknolojileri Imalat Sanayi Ve Ticaret Limited Sirketi
InventorsTanya Aycan BASER COBANOGLU, Adem KARSI, Alperen BAYRAM
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Abstract
An iron-based alloy composition includes 0.28-0.34% C, max 0.25% Si, max 0.8% Mn, 0.85-0.95% Cr, 1.10-1.50% Ni, 0.41-0.50% Mo, 0.001-0.007% B, 0.002-0.03% Nb, and balanced amount of Fe and inevitable impurities. Moreover, parts with a hardness of at least 480 HB, a tensile strength of at least 1700 MPa, a total elongation of at least 7% and an impact strength of at least 16 J are obtained by the iron-based alloy composition and a production method of the parts.
Claims16
An iron-based alloy composition developed for producing a hot formed armor steel, comprising 0.28-0.34% carbon, max 0.25% silicon, max 0.8% manganese, 0.85-0.95% chromium, 1.10-1.50% nickel, 0.41-0.50% molybdenum, 0.001-0.007% boron, 0.002-0.03% niobium by weight and a balanced amount of iron and inevitable impurities.
A hot formed armor steel, comprising 0.28-0.34% carbon, max 0.25% silicon, max 0.8% manganese, 0.85-0.95% chromium, 1.10-1.50% nickel, 0.41-0.50% molybdenum, 0.001-0.007% boron, 0.002-0.03% niobium by weight and a balanced amount of iron and inevitable impurities in a composition of the hot formed steel.
A hot formed armor steel production method, comprising the following steps:
- i. an ingot or slab casting of an alloy comprising 0.28-0.34% carbon, max 0.25% silicon, max 0.8% manganese, 0.85-0.95% chromium, 1.10-1.50% nickel, 0.41-0.50% molybdenum, 0.001-0.007% boron, 0.002-0.03% niobium by weight, and balanced amounts of iron and inevitable impurities to obtain an ingot or a slab,
- ii. hot rolling the slab or the ingot into a plate,
- iii. plate cooling and cutting,
- iv. applying a primary heat treatment to cut the plate,
- v. forming the plate by pressing in a cooled tool,
- vi. applying a secondary heat treatment to formed steel parts.
Dependencies are inferred from the claim text.