This is a chromium-nickel grade of stainless steel that may be hardened by a single low-temperature precipitation-hardening heat treatment. Excellent mechanical properties at a high strength level may be obtained by such treatment. Scaling and distortion are minimized. This material should not be used in the solution treated condition.
The strength and corrosion resistance properties of 17-4 hold up well in service temperatures up to 800°F.
Fabrication techniques for this steel are similar to those established for the regular stainless steel grades. This material machines well, has excellent welding characteristics, and forges easily. The combination of excellent mechanical and processing properties makes this grade adaptable to a wide variety of applications.

AISI 630
UNS SI7400

Color Marking:
Bars—Ends painted Blue and Yellow
Plates—Corner striped Blue and Yellow

Condition A

Stock Lengths 10' to 14'
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Size

Estimated Weight per Foot

Estimated Weight 12-Ft. Bar

N/A .2127 lb N/A 2.552 lb
N/A .3323 lb N/A 3.988 lb
N/A .4786 lb N/A 5.743 lb
N/A .8508 lb N/A 10.21 lb
N/A 1.329 lb N/A 15.95 lb
N/A 1.914 lb N/A 22.97 lb
N/A 2.606 lb N/A 31.27 lb
N/A 3.403 lb N/A 40.84 lb
N/A 5.318 lb N/A 63.81 lb
N/A 7.657 lb N/A 91.89 lb
N/A 10.42 lb N/A 125.1 lb
N/A 13.61 lb N/A 163.4 lb
N/A 17.23 lb N/A 206.7 lb
N/A 21.27 lb N/A 255.2 lb
N/A 30.63 lb N/A 367.5 lb
N/A 41.69 lb N/A 500.3 lb
N/A 54.45 lb N/A 653.4 lb
N/A 85.08 lb N/A 1021 lb
N/A 122.5 lb N/A 1470 lb
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