Title: History of the Pittsburgh Steelers
Content:  to their seventh Super Bowl. Their opponent was the Arizona Cardinals, a team that had not appeared in any league championship since 1948. Super Bowl XLIII was played on February 1, 2009 at the Buccaneers' Raymond James Stadium. By halftime, the Steelers were ahead at 17–7. Arizona's effort was hampered by penalties, in particular three personal fouls, but they managed to get ahead after WR Larry Fitzgerald scored a 63-yard touchdown, bringing the score to 23–20. But Pittsburgh's Santonio Holmes was able to convert a 6-yard TD in the final two minutes. With that, the game ended 27–23 and the Steelers gained their sixth championship, becoming the first team to win six Super Bowls since the start of the Super Bowl era.
Title: History of the Pittsburgh Steelers
Content:  (W), XIII (W), XXX (L)) with Pittsburgh leading the series 2–1. In the 1970s, Pittsburgh and Dallas were both renowned for stifling defenses named "The Steel Curtain" and "The Doomsday Defense" respectively. Pittsburgh became the first team to achieve three Super Bowl wins when it defeated Dallas in Super Bowl XIII, and the first team to achieve four Super Bowl victories a year later when they defeated the Rams. Dallas defeated the Steelers in Super Bowl XXX to become the second team behind San Francisco to win five Super Bowl Championships. Ten years later, Pittsburgh would join Dallas and San Francisco to become the third team to reach that milestone when they 
Title: Pittsburgh Steelers
Content:  has played in the most conference championship games (15), hosted the most conference championship games (11), and is tied with the Dallas Cowboys, the Denver Broncos and the New England Patriots for the most Super Bowl appearances (8). The Steelers have the best winning percentage (including every expansion team), earned the most All-Pro nominations, and have accumulated the most Super Bowl wins (6) since the modern game started in 1970. In 2017, they became the first team to reach 450 victories in the regular season since the 1970 merger. The Steelers are 36-26 (.580) in the postseason, with all but one (the 1947 playoff) having been played since the merger.
Title: 2009 Pittsburgh Steelers season
Content:  The 2009 Pittsburgh Steelers season was the franchise's 77th season in the National Football League (NFL). They were coming off a season in which they compiled a 12–4 regular season record and capped the season by winning the franchise's record sixth Super Bowl. The team's coaching staff remained the same for the third consecutive year. As the defending champions, the Steelers opened the season by hosting the NFL Kickoff Game on Thursday, September 10, 2009, which was an overtime victory against the Tennessee Titans. The team compiled a 6–2 record over the season's first half, but then began a five-game losing streak which included losses to all three division opponents. Three late wins led to a 9–7 record, but the team failed to qualify for the playoffs. This was the third straight time the team has missed the playoffs following a Super Bowl victory; 1980 and 2006 being the previous two.
Title: 1978 Pittsburgh Steelers season
Content:  The 1978 Pittsburgh Steelers season was the franchise's 46th season in the National Football League (NFL). The season concluded with the team winning Super Bowl XIII to become the first franchise in the NFL to win three Super Bowl titles. The championship run was led by quarterback Terry Bradshaw and the team's vaunted Steel Curtain defense. This team is regarded as one of the greatest defensive teams of all time and one of the greatest teams in NFL history. Bradshaw put together the best year of his career to that point, becoming only the second Steeler to win the NFL MVP award. Ten Steelers 
Title: Pittsburgh Steelers
Content:  Since the NFL merger in 1970, the Pittsburgh Steelers have compiled a regular-season record of 444–282–2 (.635) and an overall record of 480-305-2 (.635) including the playoffs, reached the playoffs 30 times, won their division 22 times, played in 16 AFC championship games, and won six of eight Super Bowls. They are also the only NFL team not to have a season with 12 or more losses since the league expanded to a 16-game schedule in 1978.
Title: History of the Pittsburgh Steelers
Content:  by Swann) to win 16–10 in the AFC Championship. The Steelers made their second straight Super Bowl, this one against the Dallas Cowboys in Miami. Down 10–7 in the fourth quarter, Roy Gerela kicked two field goals and Bradshaw threw a 64-yard touchdown pass to Swann to put Pittsburgh in the lead for good. After the Cowboys came back with a touchdown of their own, Roger Staubach threw a last-second interception that sealed a 21–17 win for the Steelers. Lynn Swann had returned from his injuries and racked up four receptions for 161 yards and a TD in the Super Bowl, earning him the title of game MVP.
Title: Pittsburgh Steelers
Content:  the franchise's record-tying fifth Super Bowl win in Super Bowl XL over the NFC champion Seattle Seahawks ten years later. With that victory, the Steelers became the third team to win five Super Bowls, and the first sixth-seeded playoff team to reach and win the Super Bowl since the NFL expanded to a 12-team post-season tournament in 1990. He coached through the 2006 season which ended with an 8–8 record, just short of the playoffs. Overall Cowher's teams reached the playoffs 10 of 15 seasons with six AFC Championship Games, two Super Bowl berths and a championship. Cowher's career record with Pittsburgh was 149–90–1 in the regular season and 161–99–1 overall, including playoff games.
Title: List of Pittsburgh Steelers seasons
Content:  12 teams in ; the same team also became the first sixth-seed to win the Super Bowl. The Steelers are 6–2 in Super Bowls, winning Super Bowl IX, Super Bowl X, Super Bowl XIII, Super Bowl XIV, Super Bowl XL, Super Bowl XLIII and losing Super Bowl XXX and Super Bowl XLV. As of the start of the 2018 season, the Steelers franchise are second all-time in playoff appearances, with 31, which is the most among active AFC franchises, as well as the most since the official start of the NFL-AFL merger in 1970. The Giants, Cowboys, and Packers are all tied for first all-time in playoff appearances, with 32 each. Notes:
Title: Pittsburgh Steelers
Content:  of 40 as he took the team to Super Bowl XLV on February 6, 2011. However, the Steelers were defeated by the Green Bay Packers, 31–25. The Steelers recorded their 400th victory in 2012 after defeating the Washington Redskins. Through the end of the 2020 season, Tomlin's record is .640, including playoffs. He is the first Pittsburgh coach to never post a losing season. The 2013–17 seasons were noted for record performances from the "Killer B's". This trio consisted of Antonio Brown, Ben Roethlisberger and Le'Veon Bell. Occasionally, the "Killer B's" has also included kicker Chris Boswell due to his ability to hit game-winning field goals.

Question: when is the last time the pittsburgh steelers won a superbowl?
Answer: Super Bowl XLIII.