公开(公告)号：WO2020201438A1

公开(公告)日：2020-10-08

申请号：PCT/EP2020/059424

申请日：2020-04-02

Applicant: SSAB TECHNOLOGY AB

Inventor： HEMMILÄ, Mikko ,  LIIMATAINEN, Tommi ,  VIROLAINEN, Esa ,  SUIKKANEN, Pasi

IPC: C21D8/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/54

Abstract: A hot-rolled steel strip product comprising a composition consisting of, in terms of weight percentages, 0.17 % to 0.38 % C, 0 % to 0.5 % Si, 0.1 % to 0.4 % Mn, 0.015 % to 0.15 % Al, 0.1 % to 0.6 % Cu, 0.2 % to 0.8 % Ni, 0.1 % to 1 % Cr, 0.01 % to 0.3 % Mo, 0 % to 0.005 % Nb, 0 % to 0.05 % Ti, 0 % to 0.2 % V, 0.0008 % to 0.005 % B, 0 % to 0.025 % P, 0.008 % or less S, 0.01 % or less N, 0 % to 0.01 % Ca, and the remainder being Fe and inevitable impurities, wherein the steel product has a Brinell hardness in the range of 420 - 580 HBW, and a corrosion index (ASTM G 101 -04 ) of at least 5.

公开(公告)号：WO2021254719A1

公开(公告)日：2021-12-23

申请号：PCT/EP2021/063421

申请日：2021-05-20

Applicant: SSAB TECHNOLOGY AB

Inventor： KESTI, Vili ,  HIRVI, Ari ,  LIIMATAINEN, Tommi ,  HEMMILÄ, Mikko ,  SUIKKANEN, Pasi ,  NYMANN, Erik ,  LIND, Martin ,  NILSSON, Robin ,  PYYKKÖNEN, Juha

IPC: B32B15/01 ,  C21D8/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/24 ,  C22C38/38 ,  C22C38/46 ,  C22C38/58 ,  C23C2/00 ,  C23C2/02 ,  C23C2/06 ,  C23C2/40 ,  B32B15/013 ,  C21D2211/005 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0263

Abstract: A hot-rolled strip steel product having a chemical composition consisting of, in terms of weight percentages (wt. %): 0.030%-0.10% C, 0%-1.10% Si, 0.50%-2.0% Mn,

公开(公告)号：WO2020099473A1

公开(公告)日：2020-05-22

申请号：PCT/EP2019/081149

申请日：2019-11-13

Applicant: SSAB TECHNOLOGY AB

Inventor： HEMMILÄ, Mikko ,  LIIMATAINEN, Tommi ,  HIRVI, Ari

IPC: C21D6/00 ,  C21D9/46 ,  C21D1/02 ,  C21D1/19 ,  C21D1/22 ,  C21D1/25 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58 ,  C21D8/02

Abstract: Hot-rolled steel strip having a tensile strength greater than 875 MPa and containing in mass-%: C 0.06-0.12, Si 0-0.5, Mn 0.70-2.20, Nb 0.005-0.100, Ti 0.01-0.10, V 0.11-0.40, whereby the total amount of V + Nb + Ti is 0.20-0.40 Al 0.005-0.150, B 0-0.0008, Cr 0-1.0, whereby the total amount of Mn + Cr is 0.9−2.5, Mo 0-0.5, Cu 0-0.5, Ni 0-1.0, P 0-0.05, S 0-0.01, Zr 0-0.1 Co 0-0.1 W 0-0.1 Ca 0-0.005, N 0-0.01, balance Fe and unavoidable impurities, and having a microstructure at ¼ thickness that is: • at least 90% martensite and bainite with island-shaped martensite-austenite (MA) constituents, preferably at least 95% and more preferably over 98%, the remainder being: • less than 5% polygonal ferrite and quasi-polygonal ferrite, preferably less than 2%, 30 more preferably less than 1%, • less than 5% pearlite, preferably less than 2%, more preferably less than 1%, • less than 5% austenite, preferably less than 2%, more preferably less than 1% so that the total area percentage is 100%.

公开(公告)号：WO2021254722A1

公开(公告)日：2021-12-23

申请号：PCT/EP2021/063494

申请日：2021-05-20

Applicant: SSAB TECHNOLOGY AB

Inventor： KESTI, Vili ,  LIIMATAINEN, Tommi ,  HEMMILÄ, Mikko ,  SUIKKANEN, Pasi ,  NYMANN, Erik ,  LIND, Martin ,  NILSSON, Robin ,  PYYKKÖNEN, Juha

IPC: C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/32 ,  C22C38/38 ,  C22C38/58 ,  C23C2/00 ,  C23C2/40 ,  C23C30/00 ,  C21D8/04 ,  C21D9/46 ,  C22C38/14 ,  C22C38/24 ,  C22C38/28 ,  C21D2211/005 ,  C21D8/0426

Abstract: A hot-rolled strip steel product having a chemical composition consisting of, in terms of weight percentages (wt. %): 0.025%-0.070% C, 0%-1.10% Si, 0.50%-2.0% Mn,

公开(公告)号：WO2019145196A1

公开(公告)日：2019-08-01

申请号：PCT/EP2019/051006

申请日：2019-01-16

Applicant: SSAB TECHNOLOGY AB

Inventor： LIIMATAINEN, Tommi ,  HEMMILÄ, Mikko ,  HIRVI, Ari ,  LIMNELL, Teijo ,  SAARINEN, Tuomo ,  ANTOLA, Tuomas ,  LEHTIKANGAS, Pasi ,  KESTI, Vili ,  TIHINEN, Sakari ,  MARTINMÄKI, Saija

IPC: C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C21D6/00 ,  C21D8/02 ,  C21D1/18 ,  C21D9/46

CPC classification number: C22C38/001 ,  C21D1/18 ,  C21D1/20 ,  C21D1/25 ,  C21D6/004 ,  C21D6/005 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0247 ,  C21D8/0263 ,  C21D8/0447 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/008 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54

Abstract: Hot-rolled steel having a yield strength (Rpo. 2 ) of at least 1100 MPa along and/or transverse to a rolling direction which has a chemical composition containing (in mass- %): C: 0.10 - 0.2, Si: 0 - 0.7, Mn: 1.1 - 2.2, Nb: 0 - 0.06, Ti: 0 - 0.15, V: more than 0.03 and ≥0.25, Al: 0.01 -0.15, B: 0.0005 - 0.010, Cr: 0.1 - 1.7, Mo: 0.15-0.8, Cu: 0 - 1.5, Ni: 0.3 - 2.5, P: 0 - 0.015, S: 0 - 0.008 Zr: 0 - 0.2, Ca: 0 - 0.004, preferably N 0-0.01, the balance Fe and unavoidable impurities, whereby a) when 0.1 0.14 and Mo ≥ 0.5 (in mass-%), b) when 0.11 ≤ C 0.11, then Mn≥ 1.3 and Mo ≥ 0.15 (in mass-%) or when C ≥ 0.15 and V 0.03 - 0.11, then Mn > 1.3 and Mo > 0.15 and Nb > 0.02 and Cr+Cu+Ni >1.4 (in mass-%).