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NM550

  • Executive standard:GB/AS PER request
  • Thickness:3-150mm
  • Delivery Status:Q+T
  • HS code:72254099
  • Product description:NM550 Wear resisting steel adopt the first Word Pinyin NaiMo and its HBW value to name the grade; 550——Show the average brinell hardness of steel plate
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——NM550

NM550 Wear resisting steel adopt the first Word Pinyin NaiMo and its HBW value to name the grade; 550——Show the average brinell hardness of steel plate


1.NM550 belong to low alloy wear resistant steel

2.Named:NM550。

3.NM550 its average HBW is 550

(International Stipulation Range of HBW:≥530)。

4.The Delivery Status NM550:quenched and Tempered 。

5.Steel Plate size, Shape, Weight and allowable Deviation: should comply with the provisions of GB/T709.

6.Steel Surface Quality:conform to GB/T 3274;

7.The provisions of this standard and acceptance inspection items of the reinspection rules shall comply with the provisions of GB/T 17505.

8.Rolled Range:3-80mm(Other thickness two sides negotiate)

9.Chemical and mechanical Property:as following Table

NM550 Chemical Property

GRADE

Chemical PropertyQuality Percent/%

C

Si

Mn

P

S

Cr

Ni

Mo

Ti

Bta

AIs

CEV

NM550

0.38

0.70

1.70

0.020

0.010

1.20

100

0.70

0.050

0.0005~0.006

0.010

0.72

Bta stands for Boron content

NM550 Mechanical Property

GRADE

THICK

mm

TENSIBLE STRENGTH

Rm  MP a

YIELD STRENGTH

A50 %

—20℃ IMPACT TEST

AKv / J

HBW

NM550

3~70

--

--

--

≥530

Tensile strength, elongation and impact energy as the special requirements of performance, such as customer did not indicate in the contract, the only guarantee the brinell hardness.

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