AISI A8 Steel

AISI A8 Steel

Steel name: AISI A8
Table No.: 1720
AISI/SAE designation: AISI A8
Chemical composition in weight %: 0.48-0.55% C, 0.75-1.05% Si, 0.20-0.50% Mn, max. 0.030% P, max. 0.030% S, 7.25-8.75% Cr, 1.25-1.65% Mo, 0.22-0.55% V, 0.50% W
Steel group: Tool steels
Properties: No data
Applications: Chipper knife, squaring shears, slitter knives, scrap shears, roll splitters.
Reference: Not shown in this demo version.

Heat Treatment
Hardening: Preheat to 1100° F - 1290° F, soak until uniformly heated, and either transfer or raise furnace temperature to 1850° F -1925° F, and hold at temperature no more than 25 minutes regardless of section size. Air cool in circulating air or an air blast.
Tempering: Temper immediately after quenching, before the part has cooled to below 150oF. Parts should be held a minimum of 2 hours per inch of thickness. Dou-ble tempering is recommended for the grade, The following tempering table may be used as a guide. However, since 1/2” diameter specimens were used as a test, it may be found that heavier sections are several points lower. Tempering data was based on samples austenitized at 1925° F.

Table Tempering Temperature (F) - Hardness (HRC)

Price: 20.00 US $
Buy Online Tempering Diagram

Other Steel Data links
Carbides in Steel
CCT and TTT Diagrams of Steels
CCT and TTT Diagram Calculating Service
Hardenability Diagrams of Steels
Hardenability Calculating Service
Macro Defects in Steel
Metal Etchants
Non-Metallic Inclusions in Steel
Semiconductor Etchants

Disclaimer: The material data is a central depository of information based on global actual tests and calculated software data that is available to the public for a fee. The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other purposes. There is no representation that the recipient of this literature will receive updated editions as the become available.