It was among 200 things from the liner sold at a bartering in Devizes.
The key had been anticipated to get up to Â£50,000. Salesperson Andrew Aldridge said the sum the key at long last sold for “mirrored its significance and one of a kind nature”.
A postcard sent by the ship’s “gallant” boss remote administrator sold for Â£19,000.
The locker key had a place with second rate class steward Sidney Sedunary, from Berkshire, who died when the Titanic went down in April 1912, subsequent to hitting a chunk of ice.
Mr Aldridge said: “No ifs ands or buts [he spared lives]. Here’s a man who relinquished his life to spare others.”
The sale in Devizes was one of the greatest including Titanic memorabilia for a long time.
RMS Titanic had been four days into a week-long transoceanic intersection from Southampton to New York when the evidently “resilient” ship struck an ice sheet on 14 April 1912.
The ship sank under three hours after the fact at around 02:20 on 15 April; 1,500 travelers and group passed on and 710 survived.
A gathering of letters composed by Boss Officer Henry Wilde, who was second in summon on the vessel, brought Â£5,000 at the closeout.
In one of the letters, composed installed Titanic and posted at Queenstown (now Cobh) in Ireland, Wilde demonstrated he had apprehensions about the new ship.
“Despite everything I don’t care for this ship… I have an eccentric feeling about it,” he composed.
He had been hoping to take order of another ship, the Cymric, and just marked on to the Titanic on 9 April 1912, the day preceding it cruised.
On 31 Walk 1912, he said he was “horrendously disillusioned to discover the game plans for my taking charge of the Cymric have changed. I am currently going to join the Titanic until some other ship turns up for me”.
After the crash, Wilde assumed responsibility of the even-numbered rafts, and supervised their stacking and bringing down into the water. He was among the individuals who passed on in the catastrophe.
Mr Aldridge said: “It is without uncertainty one of the finest Titanic-related letters, composed by one of the liner’s most senior officers on Olympic stationery.
“This part uncovers beforehand obscure subtle elements and demonstrates Wilde’s conspicuous dissatisfaction in being exchanged to Titanic.
“What is sure is that he worked tirelessly to stack the water crafts once the earnestness of the circumstance was clear to him.”
Likewise incorporated into the deal was a postcard from the ship’s senior remote administrator, 25-year-old Jack Phillips, from Farncombe in Surrey, who carried on sending trouble messages to different ships as the Titanic sank.
Phillips, who suffocated, was depicted as “the man who spared all of us” by survivor and kindred remote administrator Harold Connect.
The card, marked “Love all, Jack”, portrays the climate as the ship left Cowes on the Isle of Wight. It was sold for Â£19,000.