第 4 季 共 23 集
播出时间：2017年4月12日
第 1 集 Judges Pick
播出时间：2017年4月12日
The judges pick past bladesmiths to represent them; first, the smiths must use steel from N.Y.C. streets to forge signature blades. In the final round, the competitors have five days to forge a sword that originated in West Africa, the Ida.
第 2 集 Deer Horn Knives
播出时间：2017年4月12日
Four bladesmiths tee up for a never-before seen challenge, harvesting steel from a vintage golf club to forge signature blades. In the final round, the remaining smiths must forge a pair of iconic double bladed weapons with two times the edge.
第 3 集 The Katzbalger
播出时间：2017年4月19日
For the first time ever, the competitors are challenged with creating not one, but two blades in the first round. After a grueling second round, the two remaining smiths have just five days to create an iconic 15th century combat sword–the Katzbalger.
第 4 集 Makraka
播出时间：2017年4月26日
Four bladesmiths face a new twist in the first round when they learn they can’t forge any blade in their own style, they must forge a karambit, a curved knife that resembles a claw. The final two competitors have five days to forge one of the deadliest weapons in African history–the Makraka.
第 5 集 Fans' Choice
播出时间：2017年5月3日
Chosen by fans, four bladesmiths return for a second shot at victory. The smiths must use their best forging techniques to make a signature blade using barbed wire; the final two smiths craft a historical Filipino weapon of war, the Panabas.
第 6 集 Akrafena
播出时间：2017年5月10日
Bladesmiths are tasked with forging a Kukri, the signature blade of master smith and judge, Jason Knight. After two rounds of mishaps and mischief, two smiths forge ahead in the final challenge to reproduce a distinctive African sword, the Akrafena.
第 7 集 Talwar
播出时间：2017年5月17日
A new group of competitors face the unknown when they are tasked with using odd shapes of mystery steel to forge a blade in their signature style. All four smiths fight to the finish amidst painful injuries and setbacks, but only two make it through to the final round. With just five days to recreate the sacred but lethal Talwar sword, which smith will defy all odds to claim the title of Forged In Fire Champion and $10,000 prize?
第 8 集 The Cinquedea
播出时间：2017年5月24日
Four bladesmiths are welcomed to the forge with a curveball–they must utilize questionable steel from mining tools to forge a blade in their signature style. Ultimately, two smiths survive to forge an intricately designed and deadly Italian sword–the Cinquedea.
第 9 集 The Charay
播出时间：2017年6月7日
The competitors must demonstrate edged-weapon mastery when they are tasked with turning salvaged junkyard steel into a weapon. Two forge ahead to the final round to recreate the legendary Charay sword.
第 10 集 Sword Breaker Redemption
播出时间：2017年6月14日
Four competitors return to the forge for a second chance; they must forge their signature blades using recycled steel from a jackhammer. Then, the finalists must recreate a distinctive 16th-century blade called the Sword Breaker.
第 11 集 Master & Apprentice
播出时间：2017年7月12日
Masters compete alongside their apprentices as they take turns on the forge floor, fusing their skills to forge a cleaver using the arduous jellyroll technique; in the final round, the smiths must forge a deadly Congolese chopper, the Nzappa Zap.
第 12 集 Ngombe Ngulu
播出时间：2017年7月19日
Four bladesmiths must forge blades from a giant elevator cable; two finalists return home to recreate the African Ngombe Ngulu, known as the executioner's sword.
第 13 集 The Shamshir
播出时间：2017年7月26日
Four competing bladesmiths are tasked with forging a bowie knife that will require a d-guard in the second round; only two manage to make it through to the final round where they must recreate a deadly saber called the Shamshir.
第 14 集 The Kachin Dao
播出时间：2017年8月2日
Smiths must use steel from old nautical equipment to forge-weld their signature blades, while being forced to do it using a metal inlay technique; then, the two finalists have just five days to forge the Kachin Dao, a deadly headhunting sword.
第 15 集 The Gladiators' Scissor
播出时间：2017年8月9日
With a variety of steels to choose from, the smiths are forced to create a canister Damascus billet from which they must forge a dagger; only two enter the final round where they must recreate an ancient Roman weapon known as the Scissor.
第 16 集 The Kampilan
播出时间：2017年8月23日
Four bladesmiths head to a scrap yard to create their signature blades using harvested metal and a coal forge; in the final round, the smiths must re-create a fearsome battle weapon known as the kampilan.
第 17 集 The Kpinga
播出时间：2017年8月30日
The smiths are forced to layer a complex Damascus pattern into their signature-style blades; broken blades fall throughout two challenges and an unforgiving round; finalists must recreate a three-bladed African throwing knife called the Kpinga.
第 18 集 The Yatagan
播出时间：2017年9月13日
The competition shifts into high gear when the smiths are tasked with turning the rusted steel from a 1971 Mercury Cougar into their signature blades in just three hours; the finalists must create an elite military weapon known as the Yatagan.
第 19 集 International Championship / The Spadroon
播出时间：2017年10月4日
Four of the top smiths from around the world compete in an international championship; two smiths return home empty handed, while two go on to recreate the Spadroon, a weapon that transcends borders, in their efforts to bring home the title.
第 20 集 Tabar-Shishpar
播出时间：2017年10月11日
Smiths are asked to forge blades from pipe wrenches; two competitors advance to the final round during which they must recreate a rare axe-mace hybrid known as the Tabar-Shishpar.
第 21 集 Ultimate Champions Edition
播出时间：2017年10月18日
Five returning champions must earn a spot at one of the four anvils; the four remaining smiths are given cubes to forge blades in the infamous canister Damascus challenge; then, the finalists return to their home forges to recreate the Tai Chi sword.
第 22 集 Knights Templar
播出时间：2017年10月25日
Four brave smiths are thrown for a loop when they must forge together rusty chain mail and high quality steel to produce Knights Templar Crusader Daggers in Round 1.
第 23 集 Viking Edition
播出时间：2017年11月1日
Four brave competitors march into a dry moat where they must resurrect old swords and forge them into a Viking Seax, using the time-tested coal forge. With hammers in full swing and multiple obstacles in their path, the smiths exhaust every ounce of their strength to produce weapons fit to withstand any test imaginable. In the final challenge, the remaining two smiths voyage home to recreate a pair of deadly Viking War Axes in their final fight for the coveted title of Forged In Fire champion.
