Heat Treated Bars
Heat treating broadens the spectrum of properties that can be reached with special bar quality steel bars. The heat treatment of bars can be performed to improve machinability, increase toughness, improve cold forming characteristics, alter hardness and tensile strength up or down and to relieve residual stress as well as improving shearability. Gerdau's in-house heat-treating includes: cold shear annealing, thermal stress relieving, normalizing, lamellar pearlitic annealing, spheroidize annealing, and quench and tempering. Gerdau can also develop customized heat treat cycles to meet our customers specialized requirements.
Product Information
Available Grades
Bearing Steels to ASTM A295, A485, A534, and A866 (e.g. 1053, 1070, 4118, 4320, 4820, 5120, 8620)
Aircraft Quality Steel to AMS 2301 and AMS 2304
All ASTM A-29 and SAE Carbon, Resulfurized and Rephosphorized Steels (1008 to 1095, 11xx, 12xx, 15xx)
All ASTM A-29 and SAE Ally Steels (13xx, 40xx, 41xx, 43xx, 44x, 46xx, 47xx, 48xx, 50xx, 51xx, 61xx, 81xx, 86xx, 87xx, 92xx, 93xx, 94xx, and EX or PS grades)
Boron Steels, Micro-alloyed and Calcium Treated Steels
German (DIN), Japanese (JAS & JIS), and International Standards (ISO)
Restrictive and special chemistries are welcomed. Please inquire.
Quality
Hot Rolled Bars
Total Decarburization: 0.008" to 0.012" Max. (0.2 mm to 0.3 mm) Max.
Defect Depth: MFLT* Verification
Size Tolerance: 50% ASTM A-29
Macro ASTM E381: S1-R1-C2
Micro ASTM E45: A295, A485, A534 and A866
Precision Hot Rolled Bars
Total Decarburization: 0.008" to 0.012" Max. (0.2 mm to 0.3 mm) Max.
Defect Depth: MFLT* Verification
Size Tolerance: 25% AISI and ASTM A-29
Bar Size and Length Range
Hot Rolled Bar Size Ranges
Diameter: 5/8" - 6-1/16"
Lengths: 15' - 40' (Inquire for shorter or longer lengths)
Precision Hot Rolled Bar Size Ranges
Diameter: 1"– 5"
Lengths: 15'– 40' (Inquire for shorter or longer lengths)
Semi-Finished Bar Size Ranges
Diameter: 6"– 9 1/4" (152 mm to 235 mm)
Lengths: 12'– 32'
Heat Size
90–100 Ton Heats (85–90 Metric Tons)
40–50 Ton Heats (35–45 Metric Tons)
