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O1 Flat Ground - Tool Steel

Tool Steel Flat - O1
Tool Steel Flat - O1 Tool Steel Flat - O1

O1 Flat Ground, is an oil-hardening, non-deforming tool steel which can be hardened at relatively low temperatures. Tools and dies made from O1 Flat Ground will have good wearing and abrasive qualities since the tungsten and higher chromium content gives improved wear resistance. O1 Flat Ground is ground to a surface finish of up to 35Ra on six sides and is free from defects and decarburization. Sold in annealed state to be heat-treated.

  • Specifications: ASTM A681, QQ-T-570, AISI O1
  • AKA: O1 flat, O1 premachined
  • Applications: dies, knives, taps, punch plates, molds, etc.
  • Tolerances: Thickness = +/- .001", Width = +.005/-0
  • How is it Measured? Thickness (A)  X  Width (B)  X Length
  • Available Stock Sizes: 18 inch lengths

  Rockwell Hardness*  

  62-64C

  Corrosion Resistance

  Low

  Machinability

  High

  Depth of Hardening

  Medium  

  Weldability

  Medium

  Grindability

  High

  Wear Resistance

  Medium

  Distortion in Heat Treating

  Low

  Overall Toughness

  Medium

  Decarburization Resistance

  High

  Strength

  Medium  

  Resistance to Heat Softening  

  Low

* Can be hardened to Rockwell C64
Data provided for references only and is not warranted. 

WarningCalifornia Residents Warning!
Product / Size / Weight / Stock
Product / Size / Weight / Stock
Select Size & Quantity to Add to Cart
Stock #
Item Size & Description
Weight / Pc.
Select Size
QTY
Price
Add to Cart
O1116128 1/16" x 1/2" x 18"
O-1 Flat Ground
O1116128
1/16" x 1/2" x 18"
O-1 Flat Ground
0.16 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 0.16 lb/pc
Add To Cart
O1116348 1/16" x 3/4" x 18"
O-1 Flat Ground
O1116348
1/16" x 3/4" x 18"
O-1 Flat Ground
0.24 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 0.24 lb/pc
Add To Cart
O111618 1/16" x 1" x 18"
O-1 Flat Ground
O111618
1/16" x 1" x 18"
O-1 Flat Ground
0.32 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 0.32 lb/pc
Add To Cart
O11161128 1/16" x 1-1/2" x 18"
O-1 Flat Ground
O11161128
1/16" x 1-1/2" x 18"
O-1 Flat Ground
0.48 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 0.48 lb/pc
Add To Cart
O111628 1/16" x 2" x 18"
O-1 Flat Ground
O111628
1/16" x 2" x 18"
O-1 Flat Ground
0.64 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 0.64 lb/pc
Add To Cart
O11162128 1/16" x 2-1/2" x 18"
O-1 Flat Ground
O11162128
1/16" x 2-1/2" x 18"
O-1 Flat Ground
0.80 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 0.80 lb/pc
Add To Cart
O111638 1/16" x 3" x 18"
O-1 Flat Ground
O111638
1/16" x 3" x 18"
O-1 Flat Ground
0.96 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 0.96 lb/pc
Add To Cart
O111648 1/16" x 4" x 18"
O-1 Flat Ground
O111648
1/16" x 4" x 18"
O-1 Flat Ground
1.28 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 1.28 lb/pc
Add To Cart
O118128 1/8" x 1/2" x 18"
O-1 Flat Ground
O118128
1/8" x 1/2" x 18"
O-1 Flat Ground
0.32 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 0.32 lb/pc
Add To Cart
O118348 1/8" x 3/4" x 18"
O-1 Flat Ground
O118348
1/8" x 3/4" x 18"
O-1 Flat Ground
0.48 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 0.48 lb/pc
Add To Cart
O11818 1/8" x 1" x 18"
O-1 Flat Ground
O11818
1/8" x 1" x 18"
O-1 Flat Ground
0.64 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 0.64 lb/pc
Add To Cart
O1181128 1/8" x 1-1/2" x 18"
O-1 Flat Ground
O1181128
1/8" x 1-1/2" x 18"
O-1 Flat Ground
1.00 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 1.00 lb/pc
Add To Cart
O11828 1/8" x 2" x 18"
O-1 Flat Ground
O11828
1/8" x 2" x 18"
O-1 Flat Ground
1.28 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 1.28 lb/pc
Add To Cart
O1182128 1/8" x 2-1/2" x 18"
O-1 Flat Ground
O1182128
1/8" x 2-1/2" x 18"
O-1 Flat Ground
1.60 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 1.60 lb/pc
Add To Cart
O11838 1/8" x 3" x 18"
O-1 Flat Ground
O11838
1/8" x 3" x 18"
O-1 Flat Ground
2.00 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 2.00 lb/pc
Add To Cart
O11848 1/8" x 4" x 18"
O-1 Flat Ground
O11848
1/8" x 4" x 18"
O-1 Flat Ground
2.55 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 2.55 lb/pc
Add To Cart
O114148 1/4" x 1/4" x 18"
O-1 Flat Ground
O114148
1/4" x 1/4" x 18"
O-1 Flat Ground
0.32 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 0.32 lb/pc
Add To Cart
O114128 1/4" x 1/2" x 18"
O-1 Flat Ground
O114128
1/4" x 1/2" x 18"
O-1 Flat Ground
0.65 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 0.65 lb/pc
Add To Cart
O114348 1/4" x 3/4" x 18"
O-1 Flat Ground
O114348
1/4" x 3/4" x 18"
O-1 Flat Ground
0.96 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 0.96 lb/pc
Add To Cart
O11418 1/4" x 1" x 18"
O-1 Flat Ground
O11418
1/4" x 1" x 18"
O-1 Flat Ground
1.30 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 1.30 lb/pc
Add To Cart
O1141128 1/4" X 1-1/2" x 18"
O-1 Flat Ground
O1141128
1/4" X 1-1/2" x 18"
O-1 Flat Ground
1.90 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 1.90 lb/pc
Add To Cart
O11428 1/4" x 2" x 18"
O-1 Flat Ground
O11428
1/4" x 2" x 18"
O-1 Flat Ground
2.60 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 2.60 lb/pc
Add To Cart
O1142128 1/4" x 2-1/2" x 18"
O-1 Flat Ground
O1142128
1/4" x 2-1/2" x 18"
O-1 Flat Ground
3.20 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 3.20 lb/pc
Add To Cart
O11438 1/4" x 3" x 18"
O-1 Flat Ground
O11438
1/4" x 3" x 18"
O-1 Flat Ground
3.90 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 3.90 lb/pc
Add To Cart
O11448 1/4" x 4" x 18"
O-1 Flat Ground
O11448
1/4" x 4" x 18"
O-1 Flat Ground
5.10 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 5.10 lb/pc
Add To Cart
O138388 3/8" x 3/8" x 18"
O-1 Flat Ground
O138388
3/8" x 3/8" x 18"
O-1 Flat Ground
1.00 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 1.00 lb/pc
Add To Cart
O138128 3/8" x 1/2" x 18"
O-1 Flat Ground
O138128
3/8" x 1/2" x 18"
O-1 Flat Ground
1.00 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 1.00 lb/pc
Add To Cart
O138348 3/8" x 3/4" x 18"
O-1 Flat Ground
O138348
3/8" x 3/4" x 18"
O-1 Flat Ground
1.50 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 1.50 lb/pc
Add To Cart
O13818 3/8" x 1" x 18"
O-1 Flat Ground
O13818
3/8" x 1" x 18"
O-1 Flat Ground
2.00 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 2.00 lb/pc
Add To Cart
O1381128 3/8" x 1-1/2" x 18"
O-1 Flat Ground
O1381128
3/8" x 1-1/2" x 18"
O-1 Flat Ground
2.90 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 2.90 lb/pc
Add To Cart
O13828 3/8" x 2" x 18"
O-1 Flat Ground
O13828
3/8" x 2" x 18"
O-1 Flat Ground
3.90 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 3.90 lb/pc
Add To Cart
O1382128 3/8" x 2-1/2" x 18"
O-1 Flat Ground
O1382128
3/8" x 2-1/2" x 18"
O-1 Flat Ground
4.80 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 4.80 lb/pc
Add To Cart
O13838 3/8" x 3" x 18"
O-1 Flat Ground
O13838
3/8" x 3" x 18"
O-1 Flat Ground
5.75 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 5.75 lb/pc
Add To Cart
O1383128 3/8" x 3-1/2" X 18"
O-1 Flat Ground
O1383128
3/8" x 3-1/2" X 18"
O-1 Flat Ground
6.80 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 6.80 lb/pc
Add To Cart
O13848 3/8" x 4" x 18"
O-1 Flat Ground
O13848
3/8" x 4" x 18"
O-1 Flat Ground
7.70 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 7.70 lb/pc
Add To Cart
O112128 1/2" x 1/2" x 18"
O-1 Flat Ground
O112128
1/2" x 1/2" x 18"
O-1 Flat Ground
1.30 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 1.30 lb/pc
Add To Cart
O112348 1/2" x 3/4" x 18"
O-1 Flat Ground
O112348
1/2" x 3/4" x 18"
O-1 Flat Ground
2.00 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 2.00 lb/pc
Add To Cart
O11218 1/2" x 1" x 18"
O-1 Flat Ground
O11218
1/2" x 1" x 18"
O-1 Flat Ground
2.60 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 2.60 lb/pc
Add To Cart
O1121128 1/2" x 1-1/2" x 18"
O-1 Flat Ground
O1121128
1/2" x 1-1/2" x 18"
O-1 Flat Ground
3.90 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 3.90 lb/pc
Add To Cart
O11228 1/2" x 2" x 18"
O-1 Flat Ground
O11228
1/2" x 2" x 18"
O-1 Flat Ground
5.10 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 5.10 lb/pc
Add To Cart
O11238 1/2" x 3" x 18"
O-1 Flat Ground
O11238
1/2" x 3" x 18"
O-1 Flat Ground
7.70 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 7.70 lb/pc
Add To Cart
O11248 1/2" x 4" x 18"
O-1 Flat Ground
O11248
1/2" x 4" x 18"
O-1 Flat Ground
10.21 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 10.21 lb/pc
Add To Cart
O158588 5/8" x 5/8" x 18"
O-1 Flat Ground
O158588
5/8" x 5/8" x 18"
O-1 Flat Ground
2.00 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 2.00 lb/pc
Add To Cart
O158348 5/8" x 3/4" x 18"
O-1 Flat Ground
O158348
5/8" x 3/4" x 18"
O-1 Flat Ground
2.40 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 2.40 lb/pc
Add To Cart
O15818 5/8" x 1" x 18"
O-1 Flat Ground
O15818
5/8" x 1" x 18"
O-1 Flat Ground
3.20 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 3.20 lb/pc
Add To Cart
O1581128 5/8" x 1-1/2" x 18"
O-1 Flat Ground
O1581128
5/8" x 1-1/2" x 18"
O-1 Flat Ground
4.80 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 4.80 lb/pc
Add To Cart
O15828 5/8" x 2" x 18"
O-1 Flat Ground
O15828
5/8" x 2" x 18"
O-1 Flat Ground
6.40 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 6.40 lb/pc
Add To Cart
O15838 5/8" x 3" x 18"
O-1 Flat Ground
O15838
5/8" x 3" x 18"
O-1 Flat Ground
9.60 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 9.60 lb/pc
Add To Cart
O15848 5/8" x 4" x 18"
O-1 Flat Ground
O15848
5/8" x 4" x 18"
O-1 Flat Ground
12.76 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 12.76 lb/pc
Add To Cart
O134348 3/4" x 3/4" x 18"
O-1 Flat Ground
O134348
3/4" x 3/4" x 18"
O-1 Flat Ground
2.87 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 2.87 lb/pc
Add To Cart
O13418 3/4" x 1" x 18"
O-1 Flat Ground
O13418
3/4" x 1" x 18"
O-1 Flat Ground
3.85 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 3.85 lb/pc
Add To Cart
O1341128 3/4" x 1-1/2" x 18"
O-1 Flat Ground
O1341128
3/4" x 1-1/2" x 18"
O-1 Flat Ground
5.75 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 5.75 lb/pc
Add To Cart
O13428 3/4" x 2" x 18"
O-1 Flat Ground
O13428
3/4" x 2" x 18"
O-1 Flat Ground
7.70 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 7.70 lb/pc
Add To Cart
O13438 3/4" x 3" x 18"
O-1 Flat Ground
O13438
3/4" x 3" x 18"
O-1 Flat Ground
11.50 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 11.50 lb/pc
Add To Cart
O13448 3/4" x 4" x 18"
O-1 Flat Ground
O13448
3/4" x 4" x 18"
O-1 Flat Ground
15.31 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 15.31 lb/pc
Add To Cart
O1118 1" x 1" x 18"
O-1 Flat Ground
O1118
1" x 1" x 18"
O-1 Flat Ground
5.10 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 5.10 lb/pc
Add To Cart
O111128 1" x 1-1/2" x 18"
O-1 Flat Ground
O111128
1" x 1-1/2" x 18"
O-1 Flat Ground
7.66 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 7.66 lb/pc
Add To Cart
O1128 1" x 2" x 18"
O-1 Flat Ground
O1128
1" x 2" x 18"
O-1 Flat Ground
10.21 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 10.21 lb/pc
Add To Cart
O1138 1" x 3" x 18"
O-1 Flat Ground
O1138
1" x 3" x 18"
O-1 Flat Ground
15.31 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 15.31 lb/pc
Add To Cart
O1148 1" x 4" x 18"
O-1 Flat Ground
O1148
1" x 4" x 18"
O-1 Flat Ground
20.50 lb/pc
  • Select Size
  • 1.5 Ft.
Select a Size 0.00
Weight: 20.50 lb/pc
Add To Cart
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