Ultra-Blak 400 HOT BLACK OXIDE POWDER FOR STEEL

Subtotal $35.00
In stock
Only %1 left

Ultra-Blak 400 is a premium-grade powdered oxidizing agent that produces a deep anthracite-black finish on steel and steel alloys.

Drag out 5–30 pounds of Ultra-Blak 400 per week per 100-gallon tank.

Samples available to purchase - CALL #262-786-9330.

PLEASE NOTE: Orders ship within 3 business days.

Corrosive
Corrosive
Health Hazard
Health Hazard
Oxidizer
Oxidizer
Toxic
Toxic

How to Use Ultra-Blak 400

Ultra-Blak 400 is a powdered oxidizing product that may be used at 5 3/4 lbs/gal to blacken a variety of steel, tool steels, and steel alloys with deep, aesthetically pleasing black finishes.

Use Ultra-Blak 400 to:
  • Work with a low-concentration formula
  • Produce an eye-appealing glossy black-blue finish
  • Achieve superior abrasion resistance and corrosion protection
  • Retain a part's original dimensions and structure
  • Meet MIL-DTL-13924D Class 1 and AMS 2485L standards
  • Work with a wide variety of steel, tool steels, and steel alloys

How to Use Ultra-Blak 400

Ultra-Blak 400 is a powdered oxidizing product that may be used at 5 3/4 lbs/gal to blacken a variety of steel, tool steels, and steel alloys with deep, aesthetically pleasing black finishes.

Use Ultra-Blak 400 to:
  • Work with a low-concentration formula
  • Produce an eye-appealing glossy black-blue finish
  • Achieve superior abrasion resistance and corrosion protection
  • Retain a part's original dimensions and structure
  • Meet MIL-DTL-13924D Class 1 and AMS 2485L standards
  • Work with a wide variety of steel, tool steels, and steel alloys
  • Customer Questions
  • Product Attachments
Can EPi process parts for me?
Yes! EPi's staff would be more than happy to process sample parts for you. We actually prefer it that way, so that you can see exactly how the finishing looks on your parts, and you can be sure you'll be happy with the results. Please fill out ...
Are there distributors of EPi products near my location?
Please call EPi at 262-786-9330 or email: us-sales@epi.com.
When will my order ship?
Please see each individual product page for more information on the availability of each item. We try to process and ship non-sample orders in 3 business days. Samples and Trial Kits have a 5 business day lead time to process and ship. Also, after...
How do I track my order?
Click the "Login" link at the top right-hand side of our site to track your order. If you do not have an account with us just give us a call at 262-786-9330.
How do I return a product?
Please call us at 262-786-9330 or email: us-sales@epi.com.
How do I create an account?
Click the "Login" link at the top right-hand side of site.
What is black oxide?
Black oxide is a blend of caustic, oxidizers, and additives that is used on ferrous metals. There are three types of metal blackening: hot, mid, and room temperature blackening. EPi was the first company to offer all three processes. <...
What makes EPI’s black oxide and metal-blackening processes better?
Insta-Blak processes do not produce smutty rub-offs like other room-temperature products. Our Ultra-Blak products are premium-grade black oxide, and Kool-Blak does not produce a smutty rub off like other mid-temperature processes. They are easy-...
What are the advantages of black oxide and metal blackening?
Ultra-Blak:
  • Produces true black oxide finish Fe3O4 magnetite finish
  • Abrasion resistance
  • Corrosion protection
  • Meets military spec MIL-DTL-13924D and AMS 2485H
  • Blackens faster than other...
What can black oxide be used for?
Black oxide can be used on a wide variety of metals. Examples of specific products that can be blackened with black oxide are listed below. 
  • Locks
  • Automobile and motorcycle parts
  • Machine parts
  • Power ...
Who uses black oxide?
Large companies such as lock manufacturers or auto manufacturers use black oxide on a large-scale basis to blacken metal parts. Black oxide can also be used by the home hobbyist who would prefer to blacken just a few items. Below are some of the major...
How is black oxide applied?
Hot- and mid-temperature black oxide is applied through a seven-step process.
  1. Clean and degrease metal parts
  2. Rinse metal parts
  3. Hydrochloric acid
  4. Rinse metal parts
  5. Blacken parts in boiling solution (hot...
What types of metal can you blacken with hot or room-temperature black oxide ?
  • Steel
  • Stainless steel
  • Cast iron
  • Copper
  • Brass
  • Cadmium
  • Zinc
  • Nickel
  • Electroless nickel
How to prevent blackened parts from getting rusty?
Customers reach out to us asking how to prevent their freshly blackened parts from rusting. EPi recommends: Use running water to rinse the parts for 1-2 minutes; Do not dry the parts between prepping, cleaning, and blackening...

More Information

More Information
Best Seller No
Blackening Features Anti Galling, Abrasion Resistant, Mil-Spec DTS 13924D Class 1, Magnetite , Glossy Finish, Smut-Free , AMS 2485L
Hazardous Material Yes
Industrial Use Only No
Replacement For / Same As Ultra Blak 400-L, Black Magic Infusion, Activated Black Magic Plus, Penetrate Ultra, Oxynate No. 7, Oxi Black Dulite,Du-Lite Steelkote Black

FAQ (14)

Customer Questions
Can EPi process parts for me?
Yes! EPi's staff would be more than happy to process sample parts for you. We actually prefer it that way, so that you can see exactly how the finishing looks on your parts, and you can be sure you'll be happy with the results. Please fill out ...
Are there distributors of EPi products near my location?
Please call EPi at 262-786-9330 or email: us-sales@epi.com.
When will my order ship?
Please see each individual product page for more information on the availability of each item. We try to process and ship non-sample orders in 3 business days. Samples and Trial Kits have a 5 business day lead time to process and ship. Also, after...
How do I track my order?
Click the "Login" link at the top right-hand side of our site to track your order. If you do not have an account with us just give us a call at 262-786-9330.
How do I return a product?
Please call us at 262-786-9330 or email: us-sales@epi.com.
How do I create an account?
Click the "Login" link at the top right-hand side of site.
What is black oxide?
Black oxide is a blend of caustic, oxidizers, and additives that is used on ferrous metals. There are three types of metal blackening: hot, mid, and room temperature blackening. EPi was the first company to offer all three processes. <...
What makes EPI’s black oxide and metal-blackening processes better?
Insta-Blak processes do not produce smutty rub-offs like other room-temperature products. Our Ultra-Blak products are premium-grade black oxide, and Kool-Blak does not produce a smutty rub off like other mid-temperature processes. They are easy-...
What are the advantages of black oxide and metal blackening?
Ultra-Blak:
  • Produces true black oxide finish Fe3O4 magnetite finish
  • Abrasion resistance
  • Corrosion protection
  • Meets military spec MIL-DTL-13924D and AMS 2485H
  • Blackens faster than other...
What can black oxide be used for?
Black oxide can be used on a wide variety of metals. Examples of specific products that can be blackened with black oxide are listed below. 
  • Locks
  • Automobile and motorcycle parts
  • Machine parts
  • Power ...
Who uses black oxide?
Large companies such as lock manufacturers or auto manufacturers use black oxide on a large-scale basis to blacken metal parts. Black oxide can also be used by the home hobbyist who would prefer to blacken just a few items. Below are some of the major...
How is black oxide applied?
Hot- and mid-temperature black oxide is applied through a seven-step process.
  1. Clean and degrease metal parts
  2. Rinse metal parts
  3. Hydrochloric acid
  4. Rinse metal parts
  5. Blacken parts in boiling solution (hot...
What types of metal can you blacken with hot or room-temperature black oxide ?
  • Steel
  • Stainless steel
  • Cast iron
  • Copper
  • Brass
  • Cadmium
  • Zinc
  • Nickel
  • Electroless nickel
How to prevent blackened parts from getting rusty?
Customers reach out to us asking how to prevent their freshly blackened parts from rusting. EPi recommends: Use running water to rinse the parts for 1-2 minutes; Do not dry the parts between prepping, cleaning, and blackening...
Please, mind that only logged in users can submit questions