are these dies strong enough to mark keys?

yes,this number punch is strong enough to mark keys

What material hardness can i expect to use these (rockwell hardness c50, c40, c30, ...)?

hi,it is 40 chromium, hardness 55 degrees

Can these be heated with a butane torch and used to burn numbers into wood?

They are made if steel so I would say yes.

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🔨 Stamp your mark, own your craft — don’t get left behind!

BUILT TO LAST - Crafted from high-strength carbon steel with differential heat treatment for unmatched durability.
COMPACT ORGANIZED - Comes in a sleek, hard plastic case designed for easy storage and on-the-go convenience.
MULTI MATERIAL MASTERY - Effortlessly imprint on leather, wood, brass, aluminum, and mild steel for all your creative projects.
PROFESSIONAL GRADE DIY - Perfect for jewelry makers, artisans, and pros who demand permanent, precise markings every time.
PRECISION AT YOUR FINGERTIPS - 9 crisp, clear number stamps (0-9) including reversible 6/9 for versatile marking.

The SYPARTS TOOL YKLP 1/4" Metal Number Stamps Set features 9 durable, 6mm carbon steel punches (0-9 with reversible 6/9) designed for permanent, precise imprints on a variety of materials including leather, brass, aluminum, and mild steel. Housed in a sturdy plastic case, this professional-grade kit is engineered for longevity and versatility, ideal for artisans and DIY enthusiasts seeking to personalize and elevate their projects.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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AR$88776

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Material	Alloy Steel
Color	Silver
Brand	YKLP
Product Dimensions	2.56"L x 2.36"W x 25.59"H
Item Weight	13.44 ounces
Hole Count	1
Operation Mode	Manual
pin hole diameter	0.25 Inches
Sheet Count	27
Manufacturer	SYPARTS
Part Number	SY201860327
Item Weight	13.4 ounces
Item model number	SY201860327
Is Discontinued By Manufacturer	No
Size	1/4" Metal Number Stamps Set
Batteries Included?	No
Batteries Required?	No

SYPARTS TOOL YKLP 1/4" Metal Number Stamps Set, 6mm Steel Number Punch DIY for Leather, Brass, Aluminum, Mild Steel 9Pcs(0-9)

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