New: steel-4140All contenthive-129948krhive-196917steemhive-183959hive-180932zzanhive-185836photographyuncommonlabhive-166405hive-188619hive-150122bitcoinlifehive-144064hive-183397hive-145157krsuccesshive-139150hive-109690hive-124908hive-101145hive-150943photoTrendingNewHotLikerssongshunsteelbuy (27)in steel-4140 • 3 months agoDeeply Exploring 4140 Wide Application Fields4140 steel is one of the most popular materials purchased in the manufacturing industry, and it is also a medium-hardenability alloy structural steel with excellent toughness, processability and…