★ M9 Bayonet | Case Hardened (Field-Tested)

The ★ M9 Bayonet | Case Hardened (Field-Tested) is a Covert-rarity knife finish with a case-hardened blue, gold, and steel patina. Field-Tested is the middle grade of the finish's full range, keeping the pattern legible while sitting below the top two grades on price.

Design

The patina forms when the steel is color case-hardened with wood charcoal at high temperature, leaving an uneven mix of blue, gold, and steel instead of any applied artwork. It comes with the flavor line "A little color never hurt anyone." The specific paint seed on a given copy decides how that color splits, and the seeds leaning heavily blue are the ones that pull the biggest premiums.

★ M9 Bayonet | Case Hardened (Field-Tested) Float and Wear

With float covering the full 0.00 to 1.00 span, this finish exists across all five grades, and Field-Tested lands in the middle of that stretch. Some added surface texture and light scuffing appear here, but the case-hardened coloring stays clearly readable since it's not a paint layer that thins or fades with use. Field-Tested covers about 0.15–0.38 on the float scale.

M9 Bayonet | Case Hardened Rarity

Covert ★ is the rarity classification, the gold-tier rare special status given to knives rather than the standard weapon rarity tiers. Any knife pull from a case is inherently uncommon, whatever the finish.

M9 Bayonet | Case Hardened Case and Collection

Being one of the original knife finishes, Case Hardened has dropped from a wide spread of cases across the game's history, with the CS:GO Weapon Case and Operation Phoenix Weapon Case among the more iconic. Across all of them, the odds of pulling a knife stay around 0.26 percent.

M9 Bayonet | Case Hardened Blue Gem Patterns

No other M9 finish gets chased for its paint seed the way this one does — Case Hardened is the blue-gem finish, and the seed alone decides whether a copy leans blue or leans gold-and-steel. Copies are ranked into tiers by that blue coverage, with pattern #601 standing as the legendary benchmark at roughly 92 percent blue, trailed by a group of other high-tier seeds such as #417 and then a long tail of lesser blue patterns. Since the seed never changes once a copy exists, a strong blue gem in Field-Tested still outguns a plain gold-and-steel copy at any wear.

StatTrak & Souvenir

A StatTrak edition of this knife exists too, adding a kill counter that becomes permanent once it starts tracking and travels with the item through every trade. Souvenir versions were never made for knives, since Major-tournament souvenir packages don't include them.

M9 Bayonet | Case Hardened Price

Field-Tested lands in the middle of the five-grade ladder, cheaper than Factory New and Minimal Wear but above Well-Worn and Battle-Scarred. Even here, Case Hardened's grail-tier standing among this knife's finishes holds — a strong blue seed can still make a Field-Tested copy worth more than an ordinary Factory New. It's available to buy on Skin.Land with instant delivery and no hidden fees.

FAQ

Is Field-Tested a reasonable middle ground for Case Hardened?

Yes — it costs less than the top two grades while keeping the case-hardened patina fully legible, since the coloring doesn't fade with wear the way a painted finish can. The main trade-off is a bit more surface texture, which matters far less here than the paint seed does.

What is the best M9 Bayonet Case Hardened blue gem seed?

The seed matters more than the wear grade on this finish. Pattern #601, at roughly 92 percent blue, is the top-regarded blue gem and market benchmark, with other high-tier seeds like #417 close behind, ahead of a long tail of more ordinary blue patterns. A Field-Tested copy carrying a great seed still holds that same standing.

What are the best gloves for Case Hardened's blue-gold look?

Blue-toned gloves play up a blue-heavy seed nicely, while gold or bronze-accented pairs pick up the warmer patches of the patina. It's a flexible finish for loadout matching since the colors already blend cool and warm tones on the blade itself. For the best M9 Bayonet Case Hardened glove combo, echo those tones rather than fighting them.