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AISI 4137 Steel
Steel name: AISI 4137
Diagram No.: 8169
Type of diagram: CCT
Mat. No. (Wr. Nr.) designation: 1.7220
DIN designation: 34CrMo4
AISI/SAE designation: AISI 4137
Chemical composition in weight %:
Extremely low carbon bainitic steel: 0.009% C, 0.26% Si, 1.99% Mn, 0.015% P, 0.015% S, 0.034% Al, plus Nb, Ti, B
Conventional low alloy steel (AISI 4137): 0.34% C, 0.22% Si, 0.80% Mn, 0.016% P, 0.014% S, 1.08% Cr, 0.21% Mo
Steel group: Carbon steels
Note: CT diagram of extremely low carbon (0.009% C)
bainitic steel and conventional low alloy steel (0.34% C).
Reference: Not shown in this demo version.
Kazukuni Hase, et al., New Extremely Low Carbon Bainitic High-Strength
Steel Bar Having Excellent Machinability
and Toughness Produced by TPCP Technology, KAWASAKI STEEL TECHNICAL REPORT No. 47 December 2002, pp. 35-41.
Transformation Diagrams
Click the image to enlarge the diagram.
Disclaimer: 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 puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.