18CrNiMo7-6 Steel Bar

DIN 120WV4 Tool Steel CHEMICAL COMPOSITION: C : 1,15 - 1,25; Mn 0,20 -0,35 ; Si 0,15 – 0,30 ; P MAX. 0,035 ; S MAX. 0,035 ; Cr 0,15 – 0,25 ; V 0,07 – 0,12 ; W 0,90 – 1,10 DELIVERY : HEAT TREATMENT ANNEALED 219 / 223 HB SURFACE FINISHING : CENTERLESS GROUND DIAMETERS : FROM 1mm TO 30mm ON RISING...

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Product Introduction

17CrNiMo6 and 18CrNiMo7-6 Case Hardening Round Alloy Steel Bar

1. CHEMICAL COMPOSITION %

18CrNiMo7-6 Chemical Composition (%):

Carbon 0.15-0.20

Silicon 0.4 max

Manganese 0.40-0.60

Phosphorus 0.04 max

Sulphur 0.04 max

Chromium 1.50-1.80

Molybdenum 0.25-0.35

Nickel: 1.40-1.70

2. MACROSTRUCURE

Internal defects on the transverse slice using hot hydrochloric acid. Macro etching should comply as per ASTM E381.

Macro structure shall conform to rating S-2, R-2, C-2.

The non metallic inclusion determination shall be in accordance with ASTM E45 (Method A)

The grain size shall be in accordance with ASTM E 112-96 Specification and must exceed Grade 5.

3. SURFACE DEFECTS

Surface cracks and defects on all rolled bars shall be detected using Eddy Current Testing Method.

5. ULTRASONIC TESTING

Ultrasonic testing results must comply with;

a) SEP 1921 group 3 class Cc

4. SIZE AND TOLERANCE FOR 18CrNiMo7-6 STEEL BARS

Diameter, mm	Tolerance
50 – 100	+ 1%
105 – 220	+ 1,2%
230 – 250	+ 2%
260 – 450	+ 3%

5. STRAIGHTNESS AND ROUNDNESS

a) Straightness deviations shall be Max 2mm per 1 meter.

b) Out of round shall not exceed 50% of the range of diameter.

6. LENGTHS

5 – 6 Meter lengths.

18CrNiMo7-6 Gear Steel Bar Supply Range

1.2363 A2 Cold Work Alloy Mould Steel Sheet

STEEL MAKING PROCESS

a) Steel is melted in Electrical Arc Furnaces.

b) Vacuum degassing required.

c) Bottom poured ingots to be used.

High Mold Steel Material 1.2581 Tool and Die Steel Mould Steel H21 SKD5 Round Bar Steel

Product Picture

18CrNiMo7-6 Alloy steel bar

TEST CERTIFICATE REQUIREMENTS

Inspection certificate in accordance to EN 10204, Form 3.1B and must include the following;

a) Steel grade.

b) Full chemical composition with Max and Min. permissible variations.

c) Heat / Cast Number (To be clearly stamped on Bar)

d) Bar diameter

e) Contract Number

f) Ultrasonic testing must state – OK

g) Testing results, hardness, macrostructure mechanical properties(According to BS 970)

h) Macrostructure Test results to ASTM E 381 shall be reported in the Certificate.

Our factory

Steel Making

Ingot Production

Forged Bars

Machinary

Delivery

Packing & Delivery

Port:Any Chinese Port

The inner size of container is below:

-- 20ft GP: 5.8m(length) x 2.13m(width) x 2.18m(high)

-- 40ft GP: 11.8m(length) x 2.13m(width) x 2.18m(high)
-- 40ft HG: 11.8m(length) x 2.13m(width) x 2.72m(high

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