---
product_id: 663084920
title: "Technologies Presto Black STEEL PC9 - versatile blackening solution for iron and steel alloys traditional patina blue and black oxide touch-up (8 oz)"
brand: "birchwood"
price: "$91"
currency: NZD
in_stock: true
reviews_count: 8
category: "Birchwood"
url: https://www.desertcart.nz/products/663084920-technologies-presto-black-steel-pc9-versatile-blackening-solution-for-iron
store_origin: NZ
region: New Zealand
---

# Concentrate mixable with water for versatile application Fast-acting formula with instant color development Deep blue/black finish on ferrous metals Technologies Presto Black STEEL PC9 - versatile blackening solution for iron and steel alloys traditional patina blue and black oxide touch-up (8 oz)

**Brand:** birchwood
**Price:** $91
**Availability:** ✅ In Stock

## Summary

> ⚙️ Elevate your steel game with instant, pro-grade black patina!

## Quick Answers

- **What is this?** Technologies Presto Black STEEL PC9 - versatile blackening solution for iron and steel alloys traditional patina blue and black oxide touch-up (8 oz) by birchwood
- **How much does it cost?** $91 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/663084920-technologies-presto-black-steel-pc9-versatile-blackening-solution-for-iron)

## Best For

- birchwood enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Heritage:** Made in the USA by Birchwood, a leader since 1948, trusted by architects and industry pros alike.
- • **Pro-Level Finish Prep:** Pairs seamlessly with sealants and waxes to prevent rust and create a durable, chip-resistant surface.
- • **Customizable Application:** Mix concentrations from 10% to full strength for brush, immersion, or spray methods tailored to your project.
- • **Instant Matte Black Elegance:** Transforms steel and iron surfaces with a rich, vibrant black patina in minutes.
- • **Versatile Metal Compatibility:** Perfect for steel, iron, and cast iron—ideal for industrial, architectural, and artistic finishes.

## Overview

Birchwood Technologies Presto Black STEEL PC9 is a fast-acting, versatile blackening solution designed for iron and steel alloys. This 8 oz concentrate can be diluted for brush or immersion applications, delivering a deep, matte black finish ideal for industrial, architectural, and artistic uses. Trusted since 1948, it offers customizable application methods and pairs with sealants to protect against rust, making it a must-have for professionals seeking a rich, durable patina.

## Description

desertcart.com: Birchwood Technologies Presto Black STEEL PC9 - versatile blackening solution for iron and steel alloys traditional patina blue and black oxide touch-up (8 oz) : Everything Else

Review: It works, if used as directed, but be responsible. It's toxic to our aquatic friends if mishandled. - This worked very well for my tools. It contains Selinium, so please dispose of it properly. I've collected my wastewater for the next hazmat drop off. There's more involved than I can fit into a review, so I'll include a photo. It only works on steel (I knew that), so you can see/expect things like the stainless bolts stay shiny. I didn't even try the aluminum handles; I dismantled most of these and cleaned and treated them individually using a 1:9 distilled water solution in an ultrasonic tank (using an isolation jar for the solution). The only refinement post-oil (camelia in my case) will be a topical microcrystalline wax, but this is already a 'standard' coat and much better than what I started with. If you're doing a more direct brush-on application, then my experience may not apply to you.
Review: Don’t blink, this stuff works fast and good! - Dang, this stuff works so fast you better not blink!! The beauty ring bolts in my bronco were kind of messed up from removing a couple times so bare metal was showing through the black. I poured some of this stuff on a bowl, dropped the button head torx bolts in and Shazam! No more silver was showing. Incredible. They look fantastic. One difference from the stock bolts is these come out with a matte black finish while the OEM Ford bolts have a shine on the black. I waxed these baby’s up and they look very, very close to the stock ones. Nobody would ever know. I got so punch happy I took my eyeglasses apart and threw the frames in but no go, this stuff only works in steel not aluminum. Oh well, can’t win ‘em all. This stuff works really well, if you need to blacken some steel hardware…get you some!

## Features

- Achieve a deep blue/black finish on all iron and non-stainless steels with Presto Black STEEL PC9. Sold as a concentrate, can be mixed 50/50 with water for brush-on applications and 10% in water for immersion. Mix at stronger concentrations for faster blackening or for difficult to blacken surfaces.
- Creates a rich, vibrant black patina. Ideal for use on a variety of ferrous metals, including steel, iron, and cast iron. Does not blacken Stainless steels
- Made in the USA: Birchwood is the trusted name used by Architects, Artists and Industry since 1948
- Artistic techniques allow for customization and unique patterns and designs. Can be applied by immersion, swab-on, or spray methods. Highlighting after will produce a pleasing distressed appearance. Wear appropriate PPE, to avoid irritation to skin, eyes and respiratory system. Gloves and safety glasses are recommended. Respiratory protection may be required if spraying the product produces a mist in work area.
- Easy-to-use and fast-acting formula. Black color starts developing instantly on clean steel surfaces! Small projects are completed in minutes. Similar to cold blue process.
- IMPORTANT: Coating itself DOES NOT protect the steel from rusting. If you do not immediately dry and seal it is prone to flash rusting. Seal with appropriate topcoat for end use. The black surface conversion is compatible with all sealants: oil, wax, clear coat, lacquers, etc. Combine with a metal cleaner and rust preventative to make a DIY black oxide kit.
- Introducing Birchwood Technologies Presto Black STEEL PC9, the ultimate solution for achieving a deep black finish on ferrous materials. This high-quality black patina coating creates a smooth, uniform black finish . It's perfect for use on a variety of ferrous metals, including steel, iron, and cast iron, and is ideal for architectural, industrial, and touch-up applications. Black metal polish.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DFRCBLRZ |
| Best Sellers Rank | #13,146 in Automotive ( See Top 100 in Automotive ) #52 in Care Corrosion & Rust Inhibitors #727 in Oils & Fluids |
| Brand | Birchwood |
| Color | Black |
| Color Code | #000000 |
| Coverage | 100-150 sq ft/gallon |
| Customer Reviews | 4.4 4.4 out of 5 stars (145) |
| Date First Available | August 30, 2024 |
| Finish Type | Metallic |
| Is Waterproof | False |
| Item Form | Liquid |
| Item Volume | 8 Fluid Ounces |
| Item Weight | 9.9 ounces |
| Item model number | 5602 |
| Manufacturer | Birchwood Laboratories LLC |
| Model Name | Presto Black STEEL PC9 |
| Package Information | Bottle |
| Paint Type | Conversion Coating |
| Product Dimensions | 2.25 x 2.25 x 5.25 inches |
| Size | 8 Fl Oz (Pack of 1) |
| Special Feature | Chip Resistant |
| Specific Uses For Product | Interior/Exterior |
| Surface Recommendation | Metal |
| UPC | 850064905007 |
| Unit Count | 8.0 Fluid Ounces |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Birchwood
- **Color:** Black
- **Finish Type:** Metallic
- **Item Volume:** 8 Fluid Ounces
- **Paint Type:** Conversion Coating
- **Size:** 8 Fl Oz (Pack of 1)
- **Special Feature:** Chip Resistant
- **Specific Uses For Product:** Interior/Exterior
- **Surface Recommendation:** Metal
- **Unit Count:** 8.0 Fluid Ounces

## Images

![Technologies Presto Black STEEL PC9 - versatile blackening solution for iron and steel alloys traditional patina blue and black oxide touch-up (8 oz) - Image 1](https://m.media-amazon.com/images/I/61NeZ3o6zEL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ It works, if used as directed, but be responsible. It's toxic to our aquatic friends if mishandled.
*by W***H on December 20, 2025*

This worked very well for my tools. It contains Selinium, so please dispose of it properly. I've collected my wastewater for the next hazmat drop off. There's more involved than I can fit into a review, so I'll include a photo. It only works on steel (I knew that), so you can see/expect things like the stainless bolts stay shiny. I didn't even try the aluminum handles; I dismantled most of these and cleaned and treated them individually using a 1:9 distilled water solution in an ultrasonic tank (using an isolation jar for the solution). The only refinement post-oil (camelia in my case) will be a topical microcrystalline wax, but this is already a 'standard' coat and much better than what I started with. If you're doing a more direct brush-on application, then my experience may not apply to you.

### ⭐⭐⭐⭐⭐ Don’t blink, this stuff works fast and good!
*by T***3 on May 20, 2025*

Dang, this stuff works so fast you better not blink!! The beauty ring bolts in my bronco were kind of messed up from removing a couple times so bare metal was showing through the black. I poured some of this stuff on a bowl, dropped the button head torx bolts in and Shazam! No more silver was showing. Incredible. They look fantastic. One difference from the stock bolts is these come out with a matte black finish while the OEM Ford bolts have a shine on the black. I waxed these baby’s up and they look very, very close to the stock ones. Nobody would ever know. I got so punch happy I took my eyeglasses apart and threw the frames in but no go, this stuff only works in steel not aluminum. Oh well, can’t win ‘em all. This stuff works really well, if you need to blacken some steel hardware…get you some!

### ⭐⭐⭐⭐⭐ Yes!!
*by B***N on December 7, 2025*

Works fantastically. Produces a much darker black than other bluing agents and works on alloys that others don't color well.

## Frequently Bought Together

- Birchwood Presto Black STEEL PC9 Technologies - versatile blackening solution for iron and steel alloys traditional patina steel blue and black oxide touch-up (8 oz)
- Birchwood Casey Fast-Drying Fast-Acting Aluminum Black Metal Finish for Restoring Scratched and Marred Areas, Gun Cleaning
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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-01-22*