AISI/SAE 1018

High-quality low-carbon steel bars, with a carbon content of approximately 0.18%, exhibit good plasticity, excellent weldability, and superior cold working properties, making them easy to stamp, bend, and draw.

AISI/SAE 1025

Low-carbon structural steel bars, with a carbon content of approximately 0.25%, have a strength slightly higher than 1018, possessing both good plasticity and weldability, and exhibiting well-balanced comprehensive mechanical properties.

AC/SE 1045 / S45

Medium-carbon high-quality structural steel bars, with a carbon content of approximately 0.45%, have high strength and hardness, good machinability, and excellent comprehensive mechanical properties after quenching and tempering.

AC/SE 4130

Chromium-molybdenum alloy structural steel bars, low-carbon Cr-Mo system, with good hardenability, excellent weldability, and outstanding high-temperature strength and creep resistance.

AISI/SAE 4140

Medium carbon chromium-molybdenum alloy structural steel bars have high strength, good hardenability, excellent comprehensive mechanical properties after quenching and tempering, and high fatigue strength.

AISI/SAE 4340

Nickel-chromium-molybdenum ultra-high strength steel bar, Ni-Cr-Mo ternary alloy, with excellent hardenability, excellent strength and toughness matching after quenching and tempering, and strong impact resistance.

AISI/SAE 5160

High-carbon chromium spring steel bars are made of chromium-containing high-carbon steel, characterized by high elastic limit, excellent hardenability, and superior fatigue and springback resistance.

AISI/SAE 8620

Nickel-chromium-molybdenum carburized steel bars, low-carbon Ni-Cr-Mo system, exhibit surface hardness and core toughness after carburizing and quenching, with excellent contact fatigue strength and impact toughness.

EN8 (080M40)

British Standard medium carbon high-quality structural steel bars, BS standard general engineering steel, with moderate strength and good machinability; performance can be improved through normalizing/quenching and tempering.

EN9 (070M55)

British Standard high-carbon structural steel bars offer higher strength and hardness, excellent wear resistance, and are suitable for wear-resistant parts under medium loads.
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