---
product_id: 8872570
title: "4 oz Steel Blackening Concentrate, Makes 2 1/2 Pints, Bluing Solution, Gun Blue/Black"
brand: "trednot"
price: "$62.10"
currency: USD
in_stock: true
reviews_count: 8
category: "Tred Not"
url: https://www.desertcart.us/products/8872570-4-oz-steel-blackening-concentrate-makes-2-1-2-pints
store_origin: US
region: United States of America
---

# Makes 2.5 pints (40 oz) solution 4 oz concentrate, potent formula Blackens steel in 2-6 minutes 4 oz Steel Blackening Concentrate, Makes 2 1/2 Pints, Bluing Solution, Gun Blue/Black

**Brand:** trednot
**Price:** $62.10
**Availability:** ✅ In Stock

## Summary

> 🖤 Elevate your steel game—blacken like a pro, protect like a boss!

## Quick Answers

- **What is this?** 4 oz Steel Blackening Concentrate, Makes 2 1/2 Pints, Bluing Solution, Gun Blue/Black by trednot
- **How much does it cost?** $62.10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/8872570-4-oz-steel-blackening-concentrate-makes-2-1-2-pints)

## Best For

- trednot enthusiasts

## Why This Product

- Trusted trednot brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Generous Yield:** One 4 oz bottle creates 2.5 pints of ready-to-use solution, maximizing your value and project scope.
- • **Precision Blackening Power:** Transform raw steel into sleek black finishes in under 6 minutes—perfect for restoration pros.
- • **Long-Lasting Rust Protection:** Beyond aesthetics, this concentrate delivers durable blackening that guards your metalwork against corrosion.
- • **Selective Metal Compatibility:** Engineered exclusively for steel—ensures flawless results without affecting stainless, aluminum, or copper.
- • **Made in the USA, Trusted Quality:** Proudly manufactured stateside, ensuring premium standards and fast domestic shipping.

## Overview

This 4 oz steel blackening concentrate from TredNot mixes 9:1 with water to produce 2.5 pints of powerful bluing solution that blackens steel surfaces in just 2 to 6 minutes. Ideal for gun maintenance and metal restoration, it offers a cost-effective, fast-acting finish that enhances rust protection and aesthetics. Note: it does not blacken stainless steel, aluminum, lead, or copper. Made in the USA with reliable domestic shipping.

## Description

4 oz concentrate for blackening steel. Mix 9 to 1 with water. Makes 5 cups of blackening solution. Works in 2-6 minutes. The pictures show steel objects submerged for 5 minutes. Significant blackening action takes place in 1 minute. Directions instruct to submerge for 2-6 minutes. This one 4 oz bottle of concentrate will make 40 ounces (2 1/2 pints) of solution and will blacken many items. May be stored after it is mixed for blackening at a later date. Will not blacken stainless steel, aluminum, lead, or copper. USA SHIPPING ONLY. I will not ship internationally.

Review: Devil is in the prep! - Update: 3 days after initial tries I redid the screw in the same original solution. This time I spent alot of time on polishing and properly cleaning the part. Also used a liberal amount of oil after the blackening. Will add pics tomorrow after process is finished. Original review First time trying my hand at blackening. I am restoring an old Columbian vise and thought that blackening some parts would help with rust protection and aesthetics. Worked like a charm - in the first 5 seconds. Waited the allotted time just in case. Parts were blackened with a nice, even coat. Devil is in the prep. Polishing the part well and cleaning it even better is a must. Had to redo the small handle 24 hours later after some of the patina peeled off. This time it was really well polished and cleaned meticulously! Will redo the screw as well. Its not as perfect as I would like it to be so repeat it is. Not sure why but the solution turned cloudy after the first use. It still worked as in the initial try, was just less transparent. Acetone worked reasonably well to clean the metal from finger prints and other oils. If you found this review helpful, please click "helpful" to save others reading time and help them make the right choice. Thank you and happy "blackening" :)
Review: Amazing product! Works as advertised. - I was skeptical of getting a good result with cold bluing. After some experimentation, I found, in order to get the best result, you have to: Above all else, use rubber gloves and safety classes! This stuff is corrosive and will burn your skin and eyes. 1. Clean, clean, clean your parts with denatured alcohol. I tried lacquer thinner first because the can was closer. It didn’t seem to work as well. It smears and leaves a film. Denatured alcohol dries clean. 2. Handle with clean cloth or paper towels. The oil from my hands affected the quality of finish. 3. Where possible, I kept the part moving in the solution. From an anecdotal perspective, it seemed to help. 4. To save solution, I capped a piece of 1” PVC pipe and cut it to length for doing the rifle barrel. I didn’t account for the dowel plug in the barrel and should have cut the PVC pipe a bit longer. Nevertheless, it worked great! This is where I found a couple faded spots from touching with my bare hands. 5. Oil kills the process and shows up as faded areas. Avoid this by cleaning everything with denatured alcohol, and when you think you are done, clean it again. 6. Did I say clean your parts? 😉 I’m not sure how long you can continue to reuse the solution. I’ve nearly completed the entire rifle with a 380ml dilution. Happy customer.

## Features

- 4 oz steel blackening concentrate
- Mix 9:1 with water. Makes 5 cups (2 1/2 Pints) of solution
- Blackens steel in 2-6 minutes
- Will not blacken stainless steel, aluminum, lead, or copper.
- USA SHIPPING ONLY. I will not ship internationally.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00737EW84 |
| Best Sellers Rank | #445,765 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #3,475 in Pest Repellents #5,296 in Gun Maintenance |
| Brand Name | TredNot |
| Country of Origin | United States |
| Customer Reviews | 4.4 4.4 out of 5 stars (119) |
| Date First Available | January 29, 2012 |
| Manufacturer | Tred-Not |
| Package Weight | 5 Ounces |
| Part Number | BM4 |

## Images

![4 oz Steel Blackening Concentrate, Makes 2 1/2 Pints, Bluing Solution, Gun Blue/Black - Image 1](https://m.media-amazon.com/images/I/718g2OL7t9L.jpg)

## Questions & Answers

**Q: will this blacken clad US Coins?**
A: my dear sir, your question is a valid one, but asked of the wrong person. i am 82 yrs old, old enough and smart enought to know when to keep my mouth shut when dealing with something beyond one's knowledge. my use of this liquid, diluted of course, has been to daked miniature nuts and bolts for mydioramas. i would not even begin to tell you yea or nay as per its use on an item whose valus may be deminished by its application. my most logical response would be to take a few more moments and go to the source of the material, to determine and negative side effects. any avice from anyonee elseis just grandingstanding, unless that is, they too have faced the similiar problem with the same type of metal.

**Q: Does this work for cast iron?**
A: Yes, it will work on cast iron.

**Q: Is the finish dull or shiny?**
A: It will be a dull oxide finish.  I coat with motor oil after blackening....makes shinier

**Q: Will it blacken tungesten**
A: Tungsten is naturally a grayish colored metal and is not found naturally in black and cannot be made in a black color. Black Tungsten is, in actuality, not really “black tungsten”. Tiny particles of titanium zirconium alloy, which is black in color, are shot at an extremely high velocity on a tungsten rings. try a small piece and see what happens.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Devil is in the prep!
*by V***L on April 27, 2021*

Update: 3 days after initial tries I redid the screw in the same original solution. This time I spent alot of time on polishing and properly cleaning the part. Also used a liberal amount of oil after the blackening. Will add pics tomorrow after process is finished. Original review First time trying my hand at blackening. I am restoring an old Columbian vise and thought that blackening some parts would help with rust protection and aesthetics. Worked like a charm - in the first 5 seconds. Waited the allotted time just in case. Parts were blackened with a nice, even coat. Devil is in the prep. Polishing the part well and cleaning it even better is a must. Had to redo the small handle 24 hours later after some of the patina peeled off. This time it was really well polished and cleaned meticulously! Will redo the screw as well. Its not as perfect as I would like it to be so repeat it is. Not sure why but the solution turned cloudy after the first use. It still worked as in the initial try, was just less transparent. Acetone worked reasonably well to clean the metal from finger prints and other oils. If you found this review helpful, please click "helpful" to save others reading time and help them make the right choice. Thank you and happy "blackening" :)

### ⭐⭐⭐⭐⭐ Amazing product! Works as advertised.
*by N***S on May 23, 2021*

I was skeptical of getting a good result with cold bluing. After some experimentation, I found, in order to get the best result, you have to: Above all else, use rubber gloves and safety classes! This stuff is corrosive and will burn your skin and eyes. 1. Clean, clean, clean your parts with denatured alcohol. I tried lacquer thinner first because the can was closer. It didn’t seem to work as well. It smears and leaves a film. Denatured alcohol dries clean. 2. Handle with clean cloth or paper towels. The oil from my hands affected the quality of finish. 3. Where possible, I kept the part moving in the solution. From an anecdotal perspective, it seemed to help. 4. To save solution, I capped a piece of 1” PVC pipe and cut it to length for doing the rifle barrel. I didn’t account for the dowel plug in the barrel and should have cut the PVC pipe a bit longer. Nevertheless, it worked great! This is where I found a couple faded spots from touching with my bare hands. 5. Oil kills the process and shows up as faded areas. Avoid this by cleaning everything with denatured alcohol, and when you think you are done, clean it again. 6. Did I say clean your parts? 😉 I’m not sure how long you can continue to reuse the solution. I’ve nearly completed the entire rifle with a 380ml dilution. Happy customer.

### ⭐⭐⭐⭐ Take too long bluing
*by F***O on March 30, 2025*

Work good, but, spent too much time bluing the parts and leave a lot of residue

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-02*