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4130 STEEL SHEETS

33 Reviews 5 Answered Questions

From $1.44 to $349.00

Thickness	Size (in.)	Part No.	Price	Buy
.025	6 x 12	03-21800	$1.57	Quantity
.025	9 x 9	03-21850	$2.83	Quantity
.025	9 x 18	03-21900	$5.04	Quantity
.025	18 x 18	03-22000	$11.25	Quantity
.025	18 x 36	03-22100	$22.50	Quantity
.025	18 x 72	03-22150	$45.00	Quantity
.032	6 x 12	03-22510	$4.75	Quantity
.032	9 x 9	03-22515	$5.50	Quantity
.032	9 x 18	03-22520	$10.75	Quantity
.032	18 x 18	03-22525	$21.25	Quantity
.032	18 x 36	03-22530	$42.25	Quantity
.032	18 x 72	03-22535	$83.75	Quantity
.040	6 x 12	03-22600	$3.45	Quantity
.040	9 x 9	03-22650	$3.77	Quantity
.040	9 x 18	03-22700	$7.75	Quantity
.040	18 x 18	03-22800	$14.96	Quantity
.040	18 x 36	03-22900	$29.93	Quantity
.040	18 x 72	03-22950	$59.85	Quantity
.040	8 x 8	03-56302	$2.95	Quantity
.040	12 x 12	03-56304	$6.64	Quantity
.040	20 x 12	03-56316	$11.13	Quantity
.040	26 x 10	03-56312	$12.35	Quantity
.040	12 x 24	03-56306	$13.65	Quantity
.040	14 x 30	03-56308	$19.40	Quantity
.040	18 x 30	03-56310	$24.90	Quantity
.050	6 x 12	03-23000	$1.94	Quantity
.050	9 x 9	03-23050	$4.35	Quantity
.050	9 x 18	03-23100	$8.75	Quantity
.050	18 x 18	03-23200	$17.46	Quantity
.050	18 x 36	03-23300	$34.92	Quantity
.050	18 x 72	03-23350	$69.85	Quantity
.050	4 x 24	03-56320	$5.17	Quantity
.050	12 x 12	03-56318	$7.76	Quantity
.050	8 x 24	03-56322	$10.50	Quantity
.050	12 x 24	03-56324	$15.65	Quantity
.063	6 x 12	03-23400	$5.25	Quantity
.063	9 x 9	03-23450	$6.75	Quantity
.063	9 x 18	03-23500	$11.75	Quantity
.063	18 x 18	03-23600	$21.75	Quantity
.063	18 x 36	03-23700	$42.65	Quantity
.063	18 x 72	03-23750	$83.75	Quantity
.063	10 x 10	03-56326	$6.75	Quantity
.063	10 x 14	03-56332	$8.50	Quantity
.063	12 x 12	03-56328	$9.93	Quantity
.063	12 x 24	03-56330	$18.50	Quantity
.071	6 x 12	03-23800	$6.75	Quantity
.071	9 x 9	03-23850	$7.75	Quantity
.071	9 x 18	03-23900	$14.85	Quantity
.071	18 x 18	03-24000	$29.85	Quantity
.071	18 x 36	03-24100	$59.60	Quantity
.071	18 x 72	03-24150	$119.95	Quantity
.071	4 x 4	03-56334	$1.44	Quantity
.071	12 x 12	03-56336	$13.50	Quantity
.071	12 x 24	03-56338	$19.90	Quantity
.080	6 x 12	03-24200	$6.25	Quantity
.080	9 x 9	03-24250	$8.50	Quantity
.080	9 x 18	03-24300	$14.75	Quantity
.080	18 x 18	03-24400	$26.75	Quantity
.080	18 x 36	03-24500	$51.75	Quantity
.080	18 x 72	03-24550	$103.95	Quantity
.080	2 x 10	03-56354	$2.10	Quantity
.080	12 x 24	03-56340	$22.50	Quantity
.090	6 x 12	03-24600	$8.75	Quantity
.090	9 x 9	03-55500	$9.25	Quantity
.090	9 x 18	03-24700	$18.25	Quantity
.090	18 x 18	03-24800	$36.25	Quantity
.090	8 x 36	03-24900	$72.25	Quantity
.090	18 x 72	03-24950	$144.95	Quantity
.090	2 x 10	03-56344	$2.25	Quantity
.090	6 x 8	03-56342	$10.70	Quantity
.090	12 x 24	03-56346	$32.25	Quantity
.100	6 x 12	03-25000	$8.39	Quantity
.100	9 x 18	03-25100	$18.75	Quantity
.100	18 x 18	03-25200	$37.44	Quantity
.100	18 x 36	03-25300	$74.88	Quantity
.100	18 x 72	03-25350	$149.75	Quantity
.125	6 x 12	03-55300	$9.95	Quantity
.125	9 x 9	03-25370	$13.25	Quantity
.125	9 x 18	03-25400	$22.75	Quantity
.125	18 x 18	03-25500	$42.50	Quantity
.125	18 x 36	03-25600	$82.00	Quantity
.125	18 x 72	03-25650	$159.50	Quantity
.125	10 x 24	03-56348	$29.25	Quantity
.125	12 x 24	03-56350	$35.70	Quantity
.190	9 x 9	03-25660	$18.70	Quantity
.190	9 x 18	03-25700	$38.75	Quantity
.190	18 x 18	03-25750	$71.50	Quantity
.190	18 x 36	03-26025	$136.95	Quantity
.250	9 x 9	03-25850	$21.78	Quantity
.250	9 x 18	03-25900	$43.25	Quantity
.250	18 x 18	03-25950	$87.25	Quantity
.250	18 x 36	03-26050	$174.50	Quantity
.250	18 x 72	03-00106	$349.00	Quantity

Subtotal $0.00

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Overview

4130 STEEL SHEETS
MIL-S-6345A NORMALIZED
Formerly MIL-S-18729C
This chromium-molybdenum alloy is one of the most widely used aircraft steels because of its combination of weldability, ease of fabrication and mild hardenability. It will respond to heat treatment to high strength levels and yet, in the annealed condition, it has adequate strength for many applications. Used for the manufacture of parts and components.

Tensile strength 75,000-85,000 PSI. Sheared to sheet and strip sizes listed below. Subject to availability of normalized sheet, annealed 4130 sheet may be substituted. Less 10% discount on 6 sheets 18" x 36" or 3 sheets of 18" x 72" per part number.

If Mfg. Test Reports are required, there's a minimum $15.00 charge per order. Please indicate P/N 01-01133 in the Special Instructions Box during the checkout process.

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Reviews

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Exactly what I wanted for making lightweight components that I can nitride heat-treat for more strength and reduced flexibility.

Edward G

November 24, 2020

Goods as ordered delivered promptly, with better prices than the on-line metal shops. Thanks!

Arthur M

November 20, 2020

As described and amazing packing.

Chiru C

October 30, 2020

I was able to purchase 3 .125 x 6 x 12 pieces of 4130 CM, and it was shipped USPS saving me a lot in shipping charges.

Mike F

September 2, 2020

Well packed for shipping thank you.

Ceddy

July 1, 2020

Perfect for the application.

Jr I

June 23, 2020

Exactly what I ordered

Ralph W

June 22, 2020

Just what a I needed.Fine quality as always.Now I just have to wait for the other part of the order.It is coming in 2 parts bu Canada Post I understand.

Jack P

May 20, 2020

Easy website to navigate for materials, order received on time. Thanks

Scott S

May 16, 2020

Great product

Gabriel M

May 14, 2020

Good price Delivered on time

David M

May 11, 2020

Perfect !!

George

May 2, 2020

Its a piece of 4130, what can I say.

Charles R

April 26, 2020

No issues. Thanks!

Larry R

April 16, 2020

Fast delivery, great material

Autopower I

April 10, 2020

Exactly what I ordered.

Harvey P

November 4, 2019

Excelente producto

Eduardo F

September 30, 2019

I live in Michigan. My order was shipped from Georgia. It would be nice to order parts from Chicago.

Ross B

September 20, 2019

shipped on time...

Erik W

March 3, 2019

Quality matl...speedy shipment.

Earl T

February 1, 2019

Exactly what we were needing. Just the right amount of material we wanted for this project plus the certs. Like the availability of smaller pieces and not having to order a large amount we wont use up right away.

Kay

November 6, 2018

Product as described, fast shipping!

Joey S

May 18, 2018

Fast shipping and very well packed.

Aidan

April 21, 2018

Exactly what I wanted

Jim G

March 17, 2018

Good to have around the shop for making parts and the usual great Aircraft Spruce pricing! Now if we could figure out how to get some of that free shipping to Alaska...

Andy

January 6, 2018

Good steel at a great price, and quick shipping too. Iâ€™m using the 6â€x12â€ sheets of 0.05â€ for armor and itâ€™s working great so far.

Stephen

December 15, 2017

What can one say about 4130 sheet? I needed to make some wheel pant brackets and it worked fine. Thanks. DM

Dick M

November 13, 2017

This is great plate and getting hard to find in small pieces....As you always have for 25 years....Great Job.... Thanks

Lary S

October 16, 2017

A true top quality piece of 4130 steel its clean uniform in thickness and color no surface rust from lying around on shelf not a surprise though as all orders from ACS are top quality

William C

June 25, 2017

This is a beautiful piece of steel, 6 x 12 with a smooth uniform surface, thickness, and color. It is almost too perfect to be cut up, and I am thinking of having it framed and hung as a piece of abstract art. If so, it will be titled A Piece of Steel.

David H

March 27, 2017

The 9x9 sheet had a slight curvature. However my parts were small enough that it shouldnt matter, it was just annoying. AS probably received it that way from the mill. I would have paid more for a flat piece.

Steve

March 23, 2017

Steel was bowed as if cut off roll stock and not properly straightened / flattened. Not good when cutting on laser.

Richard K

November 24, 2019

I had to purchase a larger piece of metal (03-25100) than I required due to the smaller size (03-25000) indicated in the catalogue being unavailable on the website. It cost more to purchase and significantly more for shipping. I wonder why the smaller piece couldnt be sheared from a larger sheet as a stocked item.

Larry M

June 24, 2020

Q&A

Q: Does the 0.050 4130 sheet certification include AN-QQ-S-685

It is not listed on the Cert. Test report reads: AMS6345B Normalized or otherwise Heat Treated(Successor to MIL-S-18729) Chemestry to ASTM A505 & A506

Q: Are these 4130 steel sheets domestic material?

Yes, this is domestic material.

Q: Which dimension quoted does the grain direction run on the 4130 steel sheets?

The grain runs the long dimension.

Q: Is this 4130 sheet annealed or normalized?

Annealed.

Q: The description says that Annealed sheet may be substituted for Normalized. Is there any way for me to know up front if Im going to get annealed, or normalized sheet?

Yes, you can use special instructions in the shopping cart to notate that you need annealed.

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