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Alloy 8620 in bar, tube, and plate

SPECIFICATIONS: GRADE ALLOY 8620, E8620 Aircraft Quality AMS 6274, E8620 Bearing Quality ASTM A534, AISI 8620, UNS G86200

Castle Metals stocks a wide range of Alloy 8620 in bar, tube, and plate. In addition to the U.S. and Canada, we warehouse inventory in Mexico, U.K, France, Singapore, and Shanghai. Customers calling us for 8620 a lot of times are struggling with production issues. So they also ask if Castle can process and make semi-finished parts to their specification. Anything that helps you focus on your core business is usually something that Castle Metals would like to help you achieve.

Alloy 8620 is a low carbon case hardening alloy that features a hard case with a tough ductile core which experiences minimal distortion during heat treatment, this alloy steel provides a combination of toughness, hardness, strength and impact performance not found in lower grade carbon steels.

This popular steel is widely used in many industries due to its relatively low cost and high quality, used in demanding environments where solutions better than carbon steel are required.

Applications:

  • Gears
  • Pinions
  • Shafts
  • Piston Pins
  • Cams
  • Aircraft Parts
  • Bearings

Chemistry (range or maximum in %)

grade
c
mn
p max
s
si
ni
cr
mo
other
spec
8620
 .18/.23 .70/.90
0.035
0.04
.15/.35
.40/.70
.40/.60
.15/.25 -
ASTM A29/A322
8620
BEARING
QUALITY
 .18/.23  .70/.90  0.025  0.015 .15/.35  .40/.70
.40/.60
.15/.25

 O

ASTM A534
 0.0020 MX
8620
AIRCRAFT
QUALITY
 .17/.23  .60/.95  0.025  0.025 .15/.35
.35/.75
.35/.65
.15/.25 -
AMS 6274
86L20
 .18/.23  .70/.90  0.035  0.04 .15/.35 .40/.70
.40/.60
.15/.25 Pb
ASTM A29/A322
 .15/.35
PURECUT 20®
 .18/.23  .70/.90  0.035  0.20/0.40  .15/.35 .40/.70
.40/.60
.15/.25 Bi
CASTLE
 TREATED

Castle offers 8620 AQ/BQ (Aircraft Quality/Bearing Quality) dual certified product. 

Purecut 20® is engineered 8620 bismuth treated steel offering increased machinability without lead.


Grade 8620 Bar & Tube Properties

GRADE SHAPE 
SIZE RANGE CONDITION OF STEEL SPECIFICATION RELATIVE MACHINABILITY BASED ON AISI 1212 AS 100%
8620  Rounds 3/16" - 30" As Rolled ASTM A29/A322 65%
PURECUT 20  Rounds 3/8"- 4" As Rolled/CF ASTM A108 85%
86L20 Rounds
1/4" - 4" As Rolled ASTM A322 85%
E8620 AQ  Rounds 2 3/4" - 10" As Rolled AMS 6274
AMS 2301
65%
E8620 BQ Rounds
3 1/2" - 10" As Rolled ASTM A534 65%
  E8620 BQ Tubing
1.875" OD- 11" OD
  As Rolled
  ASTM A534  65%

For more information on 8620 bar & tube, see Alloy Steel Quick Guide


Grade 8620 Plate Properties

GRADE
SHAPE
THICKNESS
CONDITION OF STEEL
SPECIFICATION
8620
Plate
1/4" - 6"
As Rolled
ASTM A829

Castle’s 8620 plate is a Cr-Ni-Mo alloy steel that is vacuum degassed and calcium treated for improved machining.

For more information on 8620 plate, see Carbon, Alloy and Stainless Steel Plate Quick Guide


Grade 8620 Bar & Tube Properties

GRADE
SHAPE
SIZE RANGE
CONDITION OF STEEL
SPECIFICATION
RELATIVE MACHINABILITY BASED ON AISI 1212 AS 100%
8620
Rounds 3/16" - 30"
As Rolled ASTM A29/A322
65%
PURECUT 20
Rounds 3/8"- 4"
As Rolled/CF ASTM A108
85%
86L20
Rounds 1/4" - 4"
As Rolled ASTM A322
85%
E8620 AQ
Rounds 2 3/4" - 10"
As Rolled AMS 6274
AMS 2301
65%
E8620 BQ
 Rounds 3 1/2" - 10"
As Rolled ASTM A534
65%
 E8620 BQ
 Tubing 1.875" OD- 11" OD
  As Rolled  ASTM A534
 65%

For more information on 8620 bar & tube, see Alloy Steel Quick Guide