Steel, tube & firewall
4130 Steel Sheet
4130 Steel Sheet, listed by 2 distributors, in the Americas and Europe & UK. The listings differ in what they state; each one's facts are below with its source.
- Material4130 chromium-molybdenum steel
Where to buy
AmericaDistributor coming soonOur partner for this region is on its way
EuropeDistributor coming soonOur partner for this region is on its way
OceaniaDistributor coming soonOur partner for this region is on its way
More distributors
AmericaMore distributors coming soon
EuropeMore distributors coming soon
OceaniaMore distributors coming soon
Same substitution clause as A distributor's 4130 sheet: if the condition matters, say so on the order.
Note the substitution clause: if normalized sheet is short, a distributor's may ship annealed. For a part whose condition is specified, say so on the order.
Specifications: Americas listing
| Material | 4130 chromium-molybdenum steel |
|---|---|
| Specification | MIL-S-6345A normalized (formerly MIL-S-18729C) |
| Thicknesses | 0.025" to 0.250" |
| Substitution | Annealed may be substituted if normalized is unavailable (per the listing) |
| Tensile strength (listed) | 75,000–85,000 psi, as stated by Spruce |
Source: a distributor's listing, checked 2026-09-30.
Specifications: Europe & UK listing
| Alloy | 4130 chromium-molybdenum steel |
|---|---|
| Thicknesses | 0.025" to 0.250" |
| Rolling | Cold-rolled and oiled to 0.125"; hot-rolled, pickled and oiled from 0.190" |
| Condition | Normalized; annealed may be substituted (per the listing) |
| Tensile strength (listed) | 75,000–85,000 psi, as stated by a distributor |
Source: a distributor's listing, checked 2026-09-30.
Sizes listed (Americas) 93 rows
| Thickness | Size (in.) | Part No. |
|---|---|---|
| .025 | 6 x 12 | 03-21800 |
| .025 | 9 x 9 | 03-21850 |
| .025 | 9 x 18 | 03-21900 |
| .025 | 18 x 18 | 03-22000 |
| .025 | 18 x 36 | 03-22100 |
| .025 | 18 x 72 | 03-22150 |
| .032 | 6 x 12 | 03-22510 |
| .032 | 9 x 9 | 03-22515 |
| .032 | 9 x 18 | 03-22520 |
| .032 | 18 x 18 | 03-22525 |
| .032 | 18 x 36 | 03-22530 |
| .032 | 18 x 72 | 03-22535 |
| .040 | 6 x 12 | 03-22600 |
| .040 | 9 x 9 | 03-22650 |
| .040 | 9 x 18 | 03-22700 |
| .040 | 18 x 18 | 03-22800 |
| .040 | 18 x 36 | 03-22900 |
| .040 | 18 x 72 | 03-22950 |
| .040 | 8 x 8 | 03-56302 |
| .040 | 12 x 12 | 03-56304 |
| .040 | 20 x 12 | 03-56316 |
| .040 | 26 x 10 | 03-56312 |
| .040 | 12 x 24 | 03-56306 |
| .040 | 14 x 30 | 03-56308 |
| .040 | 18 x 30 | 03-56310 |
| .050 | 6 x 12 | 03-23000 |
| .050 | 9 x 9 | 03-23050 |
| .050 | 9 x 18 | 03-23100 |
| .050 | 18 x 18 | 03-23200 |
| .050 | 18 x 36 | 03-23300 |
| .050 | 18 x 72 | 03-23350 |
| .050 | 4 x 24 | 03-56320 |
| .050 | 12 x 12 | 03-56318 |
| .050 | 8 x 24 | 03-56322 |
| .050 | 12 x 24 | 03-56324 |
| .063 | 6 x 12 | 03-23400 |
| .063 | 9 x 9 | 03-23450 |
| .063 | 9 x 18 | 03-23500 |
| .063 | 18 x 18 | 03-23600 |
| .063 | 18 x 36 | 03-23700 |
| .063 | 18 x 72 | 03-23750 |
| .063 | 10 x 10 | 03-56326 |
| .063 | 10 x 14 | 03-56332 |
| .063 | 12 x 12 | 03-56328 |
| .063 | 12 x 24 | 03-56330 |
| .071 | 6 x 12 | 03-23800 |
| .071 | 9 x 9 | 03-23850 |
| .071 | 9 x 18 | 03-23900 |
| .071 | 18 x 18 | 03-24000 |
| .071 | 18 x 36 | 03-24100 |
| .071 | 18 x 72 | 03-24150 |
| .071 | 4 x 4 | 03-56334 |
| .071 | 12 x 12 | 03-56336 |
| .071 | 12 x 24 | 03-56338 |
| .080 | 6 x 12 | 03-24200 |
| .080 | 9 x 9 | 03-24250 |
| .080 | 9 x 18 | 03-24300 |
| .080 | 18 x 18 | 03-24400 |
| .080 | 18 x 36 | 03-24500 |
| .080 | 18 x 72 | 03-24550 |
| .080 | 2 x 10 | 03-56354 |
| .080 | 12 x 24 | 03-56340 |
| .090 | 6 x 12 | 03-24600 |
| .090 | 9 x 9 | 03-55500 |
| .090 | 9 x 18 | 03-24700 |
| .090 | 18 x 18 | 03-24800 |
| .090 | 8 x 36 | 03-24900 |
| .090 | 18 x 72 | 03-24950 |
| .090 | 2 x 10 | 03-56344 |
| .090 | 6 x 8 | 03-56342 |
| .090 | 12 x 24 | 03-56346 |
| .100 | 6 x 12 | 03-25000 |
| .100 | 9 x 18 | 03-25100 |
| .100 | 18 x 18 | 03-25200 |
| .100 | 18 x 36 | 03-25300 |
| .100 | 18 x 72 | 03-25350 |
| .125 | 6 x 12 | 03-55300 |
| .125 | 9 x 9 | 03-25370 |
| .125 | 9 x 18 | 03-25400 |
| .125 | 18 x 18 | 03-25500 |
| .125 | 18 x 36 | 03-25600 |
| .125 | 18 x 72 | 03-25650 |
| .125 | 10 x 24 | 03-56348 |
| .125 | 12 x 24 | 03-56350 |
| .190 | 9 x 9 | 03-25660 |
| .190 | 9 x 18 | 03-25700 |
| .190 | 18 x 18 | 03-25750 |
| .190 | 18 x 36 | 03-26025 |
| .250 | 9 x 9 | 03-25850 |
| .250 | 9 x 18 | 03-25900 |
| .250 | 18 x 18 | 03-25950 |
| .250 | 18 x 36 | 03-26050 |
| .250 | 18 x 72 | 03-00106 |
Sizes listed (Europe & UK) 41 rows
| Part | Thickness (") | Size |
|---|---|---|
| 03-21800 | .025" | 6" x 12" |
| 03-21850 | .025" | 9" x 9" |
| 03-21900 | .025" | 9" x 18" |
| 03-22000 | .025" | 18" x 18" |
| 03-22510 | .032" | 6" x 12" |
| 03-22515 | .032" | 9" x 9" |
| 03-22520 | .032" | 9" x 18" |
| 03-22525 | .032" | 18" x 18" |
| 03-22600 | .040" | 6" x 12" |
| 03-22650 | .040" | 9" x 9" |
| 03-22700 | .040" | 9" x 18" |
| 03-22800 | .040" | 18" x 18" |
| 03-23000 | .050" | 6" x 12" |
| 03-23050 | .050" | 9" x 9" |
| 03-23100 | .050" | 9" x 18" |
| 03-23200 | .050" | 18" x 18" |
| 03-23400 | .063" | 6" x 12" |
| 03-23450 | .063" | 9" x 9" |
| 03-23500 | .063" | 9" x 18" |
| 03-23600 | .063" | 18" x 18" |
| 03-23800 | .071" | 6" x 12" |
| 03-23850 | .071" | 9" x 9" |
| 03-23900 | .071" | 9" x 18" |
| 03-24000 | .071" | 18" x 18" |
| 03-24200 | .080" | 6" x 12" |
| 03-24250 | .080" | 9" x 9" |
| 03-24300 | .080" | 9" x 18" |
| 03-24400 | .080" | 18" x 18" |
| 03-24600 | .090" | 6" x 12" |
| 03-55500 | .090" | 9" x 9" |
| 03-24700 | .090" | 9" x 18" |
| 03-24800 | .090" | 18" x 18" |
| 03-25000 | .100" | 6" x 12" |
| 03-25100 | .100" | 9" x 18" |
| 03-55300 | .125" | 6" x 12" |
| 03-25370 | .125" | 9" x 9" |
| 03-25400 | .125" | 9" x 18" |
| 03-25660 | .190" | 9" x 9" |
| 03-25700 | .190" | 9" x 18" |
| 03-25850 | .250" | 9" x 9" |
| 03-25900 | .250" | 9" x 18" |
Questions people actually ask
What is the 4130 Steel Sheet made of?
4130 chromium-molybdenum steel, according to the distributor listing checked on 2026-09-30.
What specification does the 4130 Steel Sheet meet?
MIL-S-6345A normalized (formerly MIL-S-18729C), according to the distributor listing checked on 2026-09-30.
What thicknesses of 4130 Steel Sheet are listed?
0.025" to 0.250", according to the distributor listing checked on 2026-09-30.
Where can I buy the 4130 Steel Sheet?
A distributor we checked lists it in the Americas and Europe & UK. The link to its page, with the live price and stock, opens when the partnership does.
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