Model Number: hot forged steel bar -14 Brand Name: Unite Steel Key Specifications/Special Features: Descriptions:EN25 is a 2.5% nickel - chromium - molybdenum high hardenability, high tensile steel, generally supplied hardened and tempered in the tensile range 930 - 1080 Mpa (Condition U) Rc 28 - 36.Characterized by high strength and toughness in very large sections - similar to EN26 but with lower carbon content.Pre hardened and tempered EN25 can be further surface hardened by flame or induction hardening, and by nitriding.EN25 is used extensively in most industry sectors for applications requiring higher tensile and yield strength than 4140 can provideApplications:X9931 is suitable for the most severe duties where freedom from temper brittleness is necessary. It has high strength and toughness in large sections. Applications include heavy drive shafts, axles, gears, excavator pins, automotive, and general, engineering applications, such as Shafts, connecting rods, pump and gear shafts, Die Holder Blocks, and long wall coal mining roof support pins.Related specifications:
Australia AS 1444-2007 X9931

Germany W.Nr 1.6743 32NiCrMo10 4

Great Britain BS970: Part 3: 1991 826M31

BS970: 1955 EN25

Chemical composition %:
Carbon 0.37-0.44

Silicon 0.17-0.37

Manganese 0.50-0.80

Phosphorus 0.04 max

Sulphur 0.04 max

Chromium 0.60-0.90

Molybdenum 0.15-0.25

Nickel 1.25-1.85

Process:EAF+LF+VD+forged+heat treatment(optional)

Size range:

Round:

Hot forged: 80mm-1200mm

Surface finishes:

Black, peeled, cold drawn, turned & polished, precision ground

Test:Ultrasonic test according to SEP 1921-84 3Cc