Track Union Pacific's Big Boy No. 4014 as it travels across our 23 state network. Stay at least 25 feet back from all railroad tracks, not only for your own safety, but also for your best photos …

SD 50s on UP were oddball units, coming from MP and CNW. This is one of the CNW units leading eastbound, along with a former MP general service SD40-2, note no dynamics; and an …

Pictures of UP 4140, Model: SD70M. Title: UP 4140 : Description: Lead Unit WB Manifest : Photo Date: 6/10/2008 Upload Date: 6/22/2008 3:22:28 PM : Location:

Big Boy No. 4014 was delivered to Union Pacific in December 1941. The locomotive was retired in December 1961, having traveled 1,031,205 miles in its 20 years in service. Union Pacific …

Union Pacific Railroad's 4014 "Big Boy" is the largest operational steam locomotive in the world. It was restored by the railroad in 2019 in celebration of the 150th anniversary of the completion...

UP 4140 UP 4140 . UP 4140 : UP 4140 : Date: 11/4/2009: Location: Alorton, IL Map : Views: 200: Collection Of: Keith B: Locomotives: UP 4140(SD70M) Author: Keith B: Picture Categories: …

4140是属于美标合金钢材质，ht表示调制热处理. sae4140(aisi4140)合金钢. 美标sae/aisi. 牌号：4140. 标准：astm a29/a 29m-05. 特性及应用： 4140特种钢，美国特种钢. 化学成分： 碳 …

ASTM4140/SAE4140/AISI4140合金结构钢是一种低合金高强度钢，其强度远高于普通的碳素钢，淬透性也更高。 这种钢材在淬火过程中变形小，能够保持较好的尺寸稳定性。 此外，它在 …

用于制造要求较 35CrMo 钢强度更高和 调质 截面更大的 锻件，如机车牵引用的大齿轮、增压器传动齿轮、后轴、受载荷极大的连杆及弹簧夹，也可用于 2000m以下石油深井 钻杆 接头与打捞 …

Choose from over 550 grade 4140/4142 steel products in a wide range of sizes. Includes material certificates and CAD models. In stock and ready to ship.