Description Thick Len Wid Price Qty Stock

8670 Carbon Steel, Flat Ground

.088 in 11.6 in 2.0 in $16.90
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BS86-0088-116020G 1

8670 Carbon Steel, HRPA

.084 in 23.5 in 2.0 in $16.20
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BS86-0084-235020 5

8670 Carbon Steel, HRPA

.096 in 12.9 in 1.5 in $7.60
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BS86-0096-129015 7

8670 Carbon Steel, HRPA

.096 in 13.0 in 1.5 in $7.70
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BS86-0096-130015 1

8670 Carbon Steel, HRPA

.096 in 23.5 in 1.5 in $13.90
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BS86-0096-235015 13

8670 Carbon Steel, Flat Ground

.099 in 23.5 in 1.5 in $27.20
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BS86-0099-235015G 1

8670 Carbon Steel, HRPA

.096 in 12.9 in 1.7 in $8.70
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BS86-0096-129017 1

8670 Carbon Steel, HRPA

.096 in 12.9 in 2.0 in $10.20
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BS86-0096-129020 11

8670 Carbon Steel, HRPA

.096 in 13.0 in 2.0 in $10.30
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BS86-0096-130020 8

8670 Carbon Steel, HRPA

.096 in 23.5 in 2.0 in $18.60
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BS86-0096-235020 2

8670 Carbon Steel, HRPA

.096 in 23.5 in 2.1 in $19.50
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BS86-0096-235021 1

8670 Carbon Steel, HRPA

.096 in 13.0 in 3.0 in $15.40
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BS86-0096-130030 2

8670 Carbon Steel, HRPA

.096 in 23.5 in 3.0 in $27.90
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BS86-0096-235030 1

8670 Carbon Steel, HRPA

.096 in 35.5 in 3.0 in $42.10
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BS86-0096-355030 2

8670 Carbon Steel, HRPA

.102 in 23.5 in 5.7 in $56.20
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BS86-0102-235057 1

8670 Carbon Steel, HRPA

.096 in 23.5 in 11.6 in $107.70
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BS86-0096-235116 1

8670 Carbon Steel, HRPA

.114 in 11.6 in 1.5 in $8.20
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BS86-0114-116015 12

8670 Carbon Steel, HRPA

.114 in 12.7 in 1.5 in $8.90
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BS86-0114-127015 10

8670 Carbon Steel, HRPA

.114 in 23.5 in 1.5 in $16.50
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BS86-0114-235015 20

8670 Carbon Steel, HRPA

.114 in 11.6 in 2.0 in $10.90
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spinner
BS86-0114-116020 10

8670 Carbon Steel, HRPA

.114 in 12.7 in 2.0 in $11.90
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BS86-0114-127020 13

8670 Carbon Steel, HRPA

.114 in 23.5 in 2.0 in $22.00
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BS86-0114-235020 5

8670 Carbon Steel, HRPA

.114 in 23.5 in 2.1 in $23.20
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BS86-0114-235021 1

8670 Carbon Steel, HRPA

.114 in 23.5 in 2.3 in $25.40
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BS86-0114-235023 1

8670 Carbon Steel, HRPA

.114 in 23.5 in 2.5 in $27.60
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BS86-0114-235025 1

8670 Carbon Steel, HRPA

.114 in 12.7 in 2.9 in $17.30
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BS86-0114-127029 2

8670 Carbon Steel, HRPA

.114 in 12.7 in 3.0 in $17.90
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BS86-0114-127030 2

8670 Carbon Steel, HRPA

.114 in 23.5 in 3.0 in $33.10
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BS86-0114-235030 2

8670 Carbon Steel, HRPA

.114 in 35.5 in 3.0 in $50.00
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BS86-0114-355030 2

8670 Carbon Steel, HRPA

.114 in 23.5 in 5.5 in $60.60
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BS86-0114-235055 1

8670 Carbon Steel, HRPA

.114 in 23.5 in 6.0 in $66.10
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BS86-0114-235060 1

8670 Carbon Steel, HRPA

.114 in 23.5 in 11.6 in $127.90
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BS86-0114-235116 4

8670 Carbon Steel, HRPA

.150 in 11.6 in 1.4 in $10.00
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BS86-0150-116014 3

8670 Carbon Steel, HRPA

.150 in 12.7 in 1.5 in $11.80
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BS86-0150-127015 6

8670 Carbon Steel, HRPA

.150 in 23.5 in 1.5 in $21.80
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BS86-0150-235015 5

8670 Carbon Steel, HRPA

.150 in 35.5 in 1.5 in $32.90
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spinner
BS86-0150-355015 4

8670 Carbon Steel, HRPA

.150 in 23.5 in 1.6 in $23.20
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BS86-0150-235016 1

8670 Carbon Steel, HRPA

.150 in 11.6 in 2.0 in $14.30
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BS86-0150-116020 6

8670 Carbon Steel, HRPA

.150 in 12.7 in 2.0 in $15.70
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spinner
BS86-0150-127020 4

8670 Carbon Steel, HRPA

.150 in 23.5 in 2.0 in $29.00
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BS86-0150-235020 11

8670 Carbon Steel, HRPA

.150 in 35.5 in 2.0 in $43.80
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BS86-0150-355020 3

8670 Carbon Steel, HRPA

.150 in 11.6 in 2.1 in $15.00
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BS86-0150-116021 1

8670 Carbon Steel, HRPA

.150 in 23.5 in 2.1 in $30.50
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BS86-0150-235021 1

8670 Carbon Steel, HRPA

.150 in 23.5 in 2.7 in $39.20
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BS86-0150-235027 1

8670 Carbon Steel, HRPA

.150 in 12.7 in 3.0 in $23.50
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spinner
BS86-0150-127030 3

8670 Carbon Steel, HRPA

.150 in 23.5 in 3.0 in $43.50
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spinner
BS86-0150-235030 2

8670 Carbon Steel, HRPA

.150 in 35.5 in 3.0 in $65.70
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BS86-0150-355030 2

8670 Carbon Steel, HRPA

.150 in 23.5 in 5.6 in $81.20
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BS86-0150-235056 1

8670 Carbon Steel, HRPA

.150 in 23.5 in 6.0 in $87.00
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BS86-0150-235060 1

8670 Carbon Steel, HRPA

.150 in 23.5 in 11.6 in $168.20
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BS86-0150-235116 2

8670 Carbon Steel, HRPA

.170 in 11.6 in 1.0 in $8.10
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BS86-0170-116010 2

8670 Carbon Steel, HRPA

.170 in 11.6 in 1.1 in $8.90
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BS86-0170-116011 1

8670 Carbon Steel, HRPA

.170 in 11.6 in 1.4 in $11.40
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BS86-0170-116014 1

8670 Carbon Steel, HRPA

.170 in 12.9 in 1.4 in $12.60
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BS86-0170-129014 1

8670 Carbon Steel, HRPA

.170 in 11.6 in 1.5 in $12.20
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BS86-0170-116015 4

8670 Carbon Steel, HRPA

.170 in 12.9 in 1.5 in $13.50
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BS86-0170-129015 8

8670 Carbon Steel, HRPA

.170 in 23.5 in 1.5 in $24.70
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BS86-0170-235015 6

8670 Carbon Steel, HRPA

.170 in 35.5 in 1.5 in $37.30
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BS86-0170-355015 3

8670 Carbon Steel, HRPA

.170 in 12.9 in 1.9 in $17.10
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BS86-0170-129019 1

8670 Carbon Steel, HRPA

.170 in 11.6 in 2.0 in $16.20
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BS86-0170-116020 1

8670 Carbon Steel, HRPA

.170 in 12.7 in 2.0 in $17.80
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spinner
BS86-0170-127020 6

8670 Carbon Steel, HRPA

.170 in 12.9 in 2.0 in $18.10
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BS86-0170-129020 12

8670 Carbon Steel, HRPA

.170 in 23.5 in 2.0 in $32.90
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BS86-0170-235020 6

8670 Carbon Steel, HRPA

.170 in 35.5 in 2.0 in $49.70
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BS86-0170-355020 4

8670 Carbon Steel, HRPA

.170 in 12.7 in 3.0 in $26.70
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BS86-0170-127030 2

8670 Carbon Steel, HRPA

.170 in 12.9 in 3.0 in $27.10
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spinner
BS86-0170-129030 2

8670 Carbon Steel, HRPA

.170 in 23.5 in 3.0 in $49.30
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spinner
BS86-0170-235030 3

8670 Carbon Steel, HRPA

.170 in 35.5 in 3.0 in $74.50
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spinner
BS86-0170-355030 2

8670 Carbon Steel, HRPA

.170 in 23.5 in 5.5 in $90.40
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BS86-0170-235055 1

8670 Carbon Steel, HRPA

.170 in 23.5 in 5.6 in $92.10
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BS86-0170-235056 1

8670 Carbon Steel, HRPA

.170 in 23.5 in 11.6 in $190.70
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BS86-0170-235116 2

8670 Carbon Steel, Flat Ground

.205 in 11.6 in 1.7 in $23.80
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BS86-0205-116017G 1

8670 Carbon Steel, HRPA

.224 in 23.5 in 2.0 in $43.30
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BS86-0224-235020 3

8670 Carbon Steel, HRPA

.240 in 11.6 in 2.0 in $22.90
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BS86-0240-116020 13

8670 Carbon Steel, HRPA

.240 in 23.5 in 2.0 in $46.40
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BS86-0240-235020 6

8670 Carbon Steel, HRPA

.240 in 35.5 in 2.0 in $70.10
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BS86-0240-355020 2

8670 Carbon Steel, HRPA

.240 in 35.5 in 2.2 in $77.10
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BS86-0240-355022 1

8670 Carbon Steel, HRPA

.240 in 23.5 in 2.5 in $58.00
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BS86-0240-235025 1

8670 Carbon Steel, HRPA

.240 in 11.6 in 3.0 in $34.40
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spinner
BS86-0240-116030 1

8670 Carbon Steel, HRPA

.240 in 23.5 in 3.0 in $69.60
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BS86-0240-235030 2

8670 Carbon Steel, HRPA

.240 in 35.5 in 3.0 in $105.20
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BS86-0240-355030 3

8670 Carbon Steel, HRPA

.240 in 23.5 in 6.0 in $139.20
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BS86-0240-235060 2

8670 Carbon Steel, HRPA

.240 in 23.5 in 11.6 in $269.20
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BS86-0240-235116 2


8670 Carbon Steel Information and Composition

Condition:
Our 8670 has been properly annealed and is in the soft condition. You do not have to do any non-standard wasteful processes before heat treating. The steel must be heat treated to get to a hardened state. Follow the heat treat recipe and the steel will harden.

Ratings:
100 = Maximum Toughness
  27 = Maximum Edge Holding

The rating scale is 0-100, 0 being minimum and 100 being maximum. The ratings are the maximum potential of the alloy. I do not recommend heat treating to the maximum value. Choose a heat treat recipe that results in the attributes you want.

Thank you to Dr Larrin Thomas for all the testing he performed and information he has provided. Buy his book Knife Engineering to learn more about knifemaking.

Alloy Comparison Table:

Description:
This steel is used extensively in the lumber industry for making large circular saw blades. The nickel add toughness and there is enough carbon for good edge holding. There is not enough nickel to make a good shiny layer in damascus.

All 8670 is not created equal. Our 8670 has been tested to ensure the extreme toughness. Other 8670 cannot make the same claim.

Think of 8670 as an improved version of 5160, extreme toughness and good edge holding.

Our 8670 is not laser or plasma cut. There are no hard edges or heat affected zones.

The tempering temperature curves listed below may raise some concerns. When we received our first batch of 8670, we verified with the mill that the tempering temperatures were correct. We made some knives and used the austenitizing and tempering temperatures the mill recommended. The video below shows a chef knife made from .100" ground to a zero edge being hammered through steel tubing. Finished hardness is 63 RC. The video shows impressive results of using heat treating recommended by the mill.



 

We do not disclose the mill where this alloy is made. The mill is located in Europe and has very tight tolerances for alloys they produce.

Flat Ground:
Any alloy that has “Flat Ground” in the description has been Blanchard ground. Our tolerances for flat grinding are +-.001” across 12”. You can identify Blanchard grinding by circular grind marks. Do not be mislead by other descriptions. Others try to pass off less accurate types of grinding with lower tolerances as flat grinding. This is why we call out our tolerances.

Information Sources:
There are many sources of information regarding knifemaking. Some sources, like Dr. Larrin Thomas of Knife Steel Nerds, are excellent. Other sources are not as credible. It is important to vet the your information sources. Be careful of anyone who says the way to heat treat 1095 or O1 is to heat to non-magnetic and quench in used motor oil. Anyone who publishes this type of information is not credible. When possible, we use information from manufacturers and industry experts.

AI Information:
The latest trend of bad information is from Artificial Intelligence (AI). Multiple companies have AI programs. AI collects and compiles information. The problem is, AI is does not know if the information is accurate or garbage. When asked, AI regurgitates and merges good and bad data. Beware of AI data when researching materials. If you read material information that sounds like it was written by a poetry graduate student, compares materials that are not similar, contains blatantly false information, etc, it was probably AI generated. At AKS, we never use AI to generate material information.


Heat Treat8670 Heat Treat Information:

Austenitize: It is critical to not exceed the maximum austenitize temperature. If you overshoot the maximum temperature by a small amount, toughness will go down dramatically.

Heat to 1,560-1,635°F and hold for 5 minutes.

Quench: Medium oil quench.

Temper: Temper twice for two hours each time.

Use the graph below to select your temperatures:


Certs8670 Certs

Chemical Composition Certification*

  1. Click on the button below to get the chemical composition of the steel you purchased.
  2. You will be required to enter the three character code written in red letters on your steel.
  3. If you do not see red letters on the steel, your specific chemical composition is not in the system.

Lookup Cert
 
* This material is NOT certified for medical or aerospace applications.
  .

BS86 BS86-0040 BS86-0060 BS86-0080 BS86-0100 BS86-0120 BS86-0140 BS86-0160 BS86-0180 BS86-0200 BS86-0220 BS86-0240 BS86-0260
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8670 Carbon Steel
Average rating:  
 1 reviews
 by LFOD Knives

The best steel available at great prices and incredibly fast shipping! Highly recommended for making sharp tough knives. I love 8670 it has a beautiful shiny polish and is literally tougher than nails!!!