Quick Details

• Samples:

  Free

• Delivery Time:

  Within 10-20 Days

• Packing:

  As Your Request

• Delivery Port:

  Xingang

• Export Ratio:

  71% - 80%

• OE Experience:

  No

Product Name:Grade: 55 STEEL

Grade: 55 STEEL

Application

ALL KINDS

Product Description:

Standard: GB / T 699-1999
Features and Scope:
High-strength carbon steel, treated with high surface hardness and strength. Generally used for high surface hardness and strength after normalizing or quenching.
Chemical Composition:
C: 0.52 ~ 0.60,  Si: 0.17 ~ 0.37,  Mn: 0.50 ~ 0.80,  S: 0.035
P: 0.035,  Cr: 0.25,   Ni: 0.25,  Cu: 0.25
Mechanical Properties:
Tensile strength b (MPa): 645 (66)
Yield strength s (MPa): 380 (39)
Elongation 5 (%): 13
Reduction of area (%): 35
Hardness: no heat treatment, 255HB; annealed steel, 217HB
Sample Size: Sample size is 25mm
Heat treatment and microstructure specifications:
Heat treatment specifications: normalizing, 820 ; quenching, 820 ; tempering, 600 .
 

Xinhairunda Steel Trade Co., Ltd. Main Products Supplied:Stainless Steel Series: stainless steel plate, stainless steel pipe, stainless steel rods.Material: 304, 304L, 321, 316L, 317L, 347H, 2520, 310S, 2205, 2507, 904LBar Series: General Round, carbon steel, alloy structural steelMaterial: ...[Read More]

Company Profile:

• Main Product:

  Stainless Steel

• Business Type:

  Trading Company

• Current Export Market:

  Eastern Europe, Eastern Asia, Southeast Asia, Mid East, Africa