4140 Steel Bar Products Steel Bar Cutting & Grinding by Precision Grinding, Inc.
AISI SAE C Mn (max) P (max) S (max) Si Cr Mo Hardness Tensile Strength Yield Strength
4140 Steel Bar 0.38 - 0.43 0.75 - 1.0 0.035 0.04 0.15 - 0.30 0.8 - 1.1 0.15 - .25 Bhn 195+
RC 22+
~ 98ksi + ~ 58ksi +

Flat Steel Bar - SAE 4140 PH Steel Bar and SAE 4140 AN

Oil Quenched & Tempered 4140 PH has a standard, industry recognized Rockwell C Hardness rating of 28 - 32. 4140 Prehard Flat Bar is Sawed or Water-Jet Cut to specifications. Standard quote requests are furnished in inches or millimeters, according to your request.

*** Please, Call us or Email your request as "4140PH" or "4140AN" x "Quantity" x "thickness" x "width" x "length"
*** Grinding Requests  Please, let us know your ground tolerance requests. Example: + .030" or +/- .005"

Saw Cutting, Flame Cutting, Plasma Cutting & Water-Jet Services available. Blanch Grinding & Surface Grinding

Standard AN 4140 Bar (in the Annealed condition) can be plasma or flame cut from plate inventory, then Annealed onsite in our furnace. Precision Grinding will custom cut any thickness and width flat bar to your order. We recommend that all standard 4140 plate & bar receive anneal treatment prior to shipping. Annealing improves Grinding and Machining, while this heat process also prevents cracking. 

Saw Cutting
Annealing
Blanchard Grinding
CNC Machining

Steel Fabrication

Long Bar Grinding Capacity:
Blanchard Grinding to 45" tall x 128" Diameter
Reciprocating Grinder to 15" x 48" x 220"
Surface Grinding to 31" x 36" x 173"

1-888-WE-GRIND
1-205-942-2491 office
1-205-942-2073  FAX
mail@precisiongrinding.com

Flame Cut 4140 Bars - custom sizes Surface Grinding to 31" x 36" x 173" to .001" parallelism Long Flat Steel Bars - Reciprocating Grinder - 15" x 48" x 220" Surface Grinding to +/- .001.   31" x 36" x 173" chuck.
Flame Cutting Services Surface Grinding Plate & Bar Ground 4140 Steel Bars Surface Ground 4140 Bars

A-36, A-572 gr. 50, A514-T1, 1045 & 4140 Plate inventory. "thickness" x 96" x 240". 1018, 1020, A2, D2, S7 available

SAE 4140 Steel Bar - Saw Cut, Flame Cut or Plasma Cut according to requirements  (WaterJet Cut Available)

We maintain Standard inventory AISI 4140 Plate, 96" x 240" in thicknesses from 1/4" - 4" thick, with Availability to 14" thick.
Standard size "pre-hard 4140 bars" are Saw cut, then ground to your custom specifications.
     Standard Tolerance requests for Blanchard Grinding include:   (+/- .005), (+/- .010), (+ .015, - .000) and (+ .030, -.000)
     Standard Tolerances for Surface Grinding include (+/- .001), (+/- .002), (+/- .003). Please, visit Ground & Machined for more information.
Non-standard sizes prehard may be water-jetted, especially if the plate is in the "pre-ground" condition.
Non-Ground, Standard size "4140 bars" may be saw cut to length. Let us know your specific heating requests.
Non-standard size "annealed 4140 bars" are often times flame cut or plasma cut to size, then annealed in our on-site furnace.

ASTM A-36 Steel Bar    Ground Steel Bar

Precision Grinding maintains standard inventory of ASTM A36 HR Bar in 2" and 3" widths.
Non-standard size "stress relieved A36 bars" are flame cut or plasma cut, then stress relieved in the oven.

Grinding SIDES, EDGES, and ENDS since 1971 . Please, email us at mail@precisiongrinding.com or call us at (888) 934-7463.

Precision Grinding, Inc.    2101 Wenonah-Oxmoor Road    Birmingham, AL 35211  USA    (888) 934-7463 Toll Free     Copyright Oct. 4, 2010  ALL RIGHTS RESERVED    HOME