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Tolerances

 

Precision Flat Ground Stock
TOLERANCE Starndard Oversize
Thickness +/-.001" +.010/.015
Width +.000/.005" +.010/.015"
Length +.250/.500" +.250/.500"
Squareness .003" per inch .003" per inch

Product Information

All tool steel analyses (O-1, A-2, D-2, S-7) are supplied in the annealed condition. Close control assures complete spheroidization throughout. The low-carbon analysis (C-1018) is supplied with pearlitic microstructure.

AISI O1

A general-purpose oil-hardening tool steel that is versatile and suitable for a wide variety of cold work applications.

Typical chemistry

C 1.00
Mn 1.20
Si 0.35
Cr 0.35
W 0.50

Hardening
Preheating Temperature:        1110-1290 ° F (600-700 ° C)
Austenitizing Temperature:     1450-1560 ° F (790-850 ° C)
Protect the part against decarburization and oxidation during hardening. Quench as quickly as possible. Cooling must be uniform and at a rate to avoid distortion and/or quench cracking. Choose the temperature from the tempering graph. Temper twice with intermediate cooling to room temperature. Lowest temperature 360 ° F (180 ° C). Holding time at temperature minimum 2 hours.

AISI A2

An air or oil hardening tool steel offering an excellent combination of wear resistance and toughness.

Typical Chemistry

C 1.00
Mn 0.70
Cr 5.00
Mo 1.10
V 0.25

Hardening
Preheating Temperature:        1200-1300 ° F (650-750 ° C)
Austenitizing Temperature:     1690-1780 ° F (925-970 ° C)
Hold for 30 minutes once the entire tool reaches temperature. Protect the part against decarburization and oxidation during hardening. Quench as quickly as possible. Cooling must be uniform and at a rate to avoid distortion and/or quench cracking. Choose the tempering temperature from the tempering graph. Temper twice with intermediate cooling to room temperature. Lowest temperature 360 ° F (180 ° C). Holding time at temperature minimum 2 hours.

AISI D2

A high-carbon, high-chromium tool steel recommended for tools requiring very high wear resistance combined with moderate toughness.

Typical Chemistry

C 1.50
Mn 0.40
Si 0.30
Cr 12.00
Mo 0.80
V 0.90

Hardening
Preheating Temperature:        1110-1290 ° F (650-750 ° C)
Austenitizing Temperature:     1810-1920 ° F (990-1050 ° C)
Protect the part against decarburization and oxidation during hardening. Choose the tempering temperature from the tempering graph. Temper twice with intermediate cooling to room temperature. Lowest temperature 360 ° F (180 ° C). Holding time at temperature minimum 2 hours. High temperature tempers are preferred when dimensional stability is of concern, if tools are to be coated, and/or EDM'd in hardened condition.


AISI 4142 PFG

A modified pre-hardened alloy steel with a Brinell Hardness of 261-321 (Rockwell C Hardness 26-34).

Typical chemistry

C 0.38/0.46
Mn 0.70/1.00
Si 0.15/0.30
Cr 0.03 min.
W -

AISI W1 Drill Rod 

A water-hardening and cold-drawn drill rod with through-hardening qualities that affords it optimum response to heat treatment and provides toughness and maximum wear-resistance in many maintenance applications.

Typical chemistry

C 0.95/1.05
Mn 0.30/0.40
Si 0.10/0.25
Cr 0.15 max
W 0.15 max

AISI M2 Drill Rod 

An annealed tungsten-molybdenum high speed steel with a wider heat treat range and a resistance to decarburization.

Typical chemistry

C 0.85 max.
Mn 0.30 max.
Si 0.30 max.
Cr 4.00 max.
W 6.00 max.

Technical References

Please refer to AISI Industry Standard specifications at www.steel.org . If there are unanswered technical questions, please e-mail a detailed explanation to techsupport@flatground.com .

 


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