NICKEL · CHROMIUM · MOLYBDENUM
QT bar for heavy-duty shafts
Quenched and tempered 34CrNiMo6 round bar, with cutting and machining available for shaft blanks.
Published QT round-bar sizes.
Supply formsQT round bars · Cut blanks · Machined blanks
Cross-references help compare grades; they do not establish interchangeability. The drawing standard, delivery condition, dimensions and inspection scope define the order.
Standard map
Supply window
Property reference
34CrNiMo6 and AISI 4340 are commonly reviewed as related Ni-Cr-Mo alloy steel routes, but buyers should specify the required standard first. Chemistry, condition, mechanical properties, and inspection requirements need order-specific review.
Heavy-duty shaft and load-bearing applications may require internal soundness review. If UT is required, the buyer should state the standard, acceptance criteria, report requirement, inspection timing, and third-party witness needs if applicable.
34CrNiMo6 is commonly reviewed with QT condition for demanding parts, but the RFQ should state the required delivery condition, mechanical-property target, section size, machining allowance, surface route, and document requirements.
Examples show a format; order documents must match your supply.
34CrNiMo6 wrought substrate before wear testing, with tempered martensite. Huang et al. (2018), Figure 12(e); original 20 µm scale retained.
Specimen and condition. Quenched-and-tempered substrate, before the wear test. The article does not give a complete substrate heat-treatment temperature/time schedule. Laser-repaired layers and worn surfaces are excluded from this hero selection.
Image treatment. Panel (e) is selected from the unaltered six-panel source figure. A source-coordinate clip excludes all other panels. The original scale is retained; no pixel retouching, sharpening or generated detail.
Chunping Huang, Xin Lin, Haiou Yang, Fencheng Liu, Weidong Huang — Microstructure and Tribological Properties of Laser Forming Repaired 34CrNiMo6 Steel, 2018. Figure 12(e). DOI and paper · CC BY 4.0.
External research specimen; not a JOTAIN batch image, product acceptance result or promised microstructure. Supplied material is defined by the ordered standard, condition and inspection records.
View the complete source figure
34CrNiMo6 · include the supplied form, standard, size, condition, quantity and destination.
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