Technical Specification

Stainless Steel

Chemical Composition of Stainless steel grades (ladle analysis) according to EN 10088 and similar grades corresponding to ASTM & JIS for examples as follows n

Symbol Mat. No. c
Symbol Mat. No. c si max mn max p max s max cr mo Ni others Astm jis
X5CrNi18-10 1.4301 ≤ 0.07 1.0 2.0 0.045 0.030 17.0-19.5 - 8.0-10.5 N ≤ 0.11 304L SUS316L
X5CrNi18-10 1.4301 ≤ 0.07 1.0 2.0 0.045 0.030 17.0-19.5 - 8.0-10.5 N ≤ 0.11 304L SUS316L
X5CrNi18-10 1.4301 ≤ 0.07 1.0 2.0 0.045 0.030 17.0-19.5 - 8.0-10.5 N ≤ 0.11 304L SUS316L
X5CrNi18-10 1.4301 ≤ 0.07 1.0 2.0 0.045 0.030 17.0-19.5 - 8.0-10.5 N ≤ 0.11 304L SUS316L
X5CrNi18-10 1.4301 ≤ 0.07 1.0 2.0 0.045 0.030 17.0-19.5 - 8.0-10.5 N ≤ 0.11 304L SUS316L

Other steel grades can be produced according to EN 10088 and by mutual agreement Mechanical properties of some stainless steel grades in heat treated condition and size range as follows

Steel Grade
Symbol Mat. No. Heat Treatment Condition Rm N/mm2 Re N/mm2 A% Min Re N/mm2 HB Max.
X5CrNi18-10 1.4301 ≤ 0.07 1.0 2.0 0.045 0.030 17.0-19.5 -
X5CrNi18-10 1.4301 ≤ 0.07 1.0 2.0 0.045 0.030 17.0-19.5 -
X5CrNi18-10 1.4301 ≤ 0.07 1.0 2.0 0.045 0.030 17.0-19.5 -
X5CrNi18-10 1.4301 ≤ 0.07 1.0 2.0 0.045 0.030 17.0-19.5 -
X5CrNi18-10 1.4301 ≤ 0.07 1.0 2.0 0.045 0.030 17.0-19.5 -

Values are specified for sizes < 160 mm

Circograph (Dr – Forester), Surface quality

Multi channel ultrasonic (Kraut Kramer), internal quality

A Annealed or solution annealed
QT Quenched and Tempered
Rm Tensile Strength
Re Upper yield stress or, if no yield phenomenon occurs, 0.2 % proof stress, Rp0.2
%A Percentage elongation after fracture
Kv Impact strength (Joule) of longitudinal Chaarpy V- notch test pieces
HB Brinell hardness

Range of Applications

Circograph (Dr – Forester), Surface quality

Multi channel ultrasonic (Kraut Kramer), internal quality

Multi channel ultrasonic (Kraut Kramer), internal quality

Multi channel ultrasonic (Kraut Kramer), internal quality

Multi channel ultrasonic (Kraut Kramer), internal quality

Multi channel ultrasonic (Kraut Kramer), internal quality

Steels for Quenching & Tempering

Chemical Composition of Quenching and Tempering Steel (ladle analysis) according to EN 10083 and similar grades corresponding to ASTM and JIS for examples as follows:

Steel grade Chemical Composition (%by mass ) Corresponding standards
Symbol Mat. No. C Si Max Mn p max s max cr mo Ni Astm jis
41Cr4 1.7035 0.38 0.45 0.40 0.60 0.90 0.035 0.035 0.90 1.20 - - 5140 SCr4
25CrMo4 1.7218 0.22 0.29 0.40 0.60 0.90 0.035 0.035 0.90 1.20 0.15 0.30 - 4130 SCM2
42CrMo4 1.7225 0.38 0.45 0.40 0.60 0.90 0.035 0.035 0.90 1.20 0.15 0.30 - 4140 SCM4
34CrNiMo6 1.6582 0.30 0.38 0.40 0.50 0.80 0.035 0.035 1.30 1.70 0.15 0.30 1.30 1.70 - SNCM9
30CrNiMo8 1.6580 0.26 0.34 0.40 0.50 0.80 0.035 0.035 1.80 2.20 0.30 0.50 1.80 2.20 - SNCM1

Steel with born (B) can be produced

Alloy steel can be produced with ( S = 0.020 - 0.040 ).

Other alloys steels can be produced according to EN10083 and by mutual agreement.

Mechanical properties of steel for Quenching and tempering condition to EN 10083 for examples as follows:

Steel Grade
Symbol Mat. No. Heat Treatment Condition HB Max. Rm N/mm2 Re N/mm2 A% Min Z% Min KV(J) Min
41Cr4 1.7035 QT - 900 - 1100 660 12 35 35
A 241 - - - - -
25CrMo4 1.7218 QT - 800 - 950 600 14 55 50
A 212 - - - - -
42CrMo4 1.7225 QT - 1000 - 1200 750 11 45 35
A 241 - - - - -
34CrNiMo6 1.6582 QT - 1100 - 1300 900 10 45 45
A 248 - - - - -
30CrNiMo8 1.6580 QT - 1250 - 1450 1050 9 40 30
A 248 - - - - -

Mechanical properties are specified for bar diameter = 17-40mm, other size acc.to EN 10083

A : Annealed or solution annealed.

QT : Quenched and Tempered

Rm : Tensile Strength

Re : Upper yield stress or, if no yield phenomenon occurs, 0.2 % proof stress, Rp0.2

A% : Percentage elongation after fracture

Z% : Reduction in cross section on fracture

KV : Impact strength (Joule) of longitudinal Charpy V- notch test pieces

HB : Brinell hardness

Range of Applications

Machine components (bolts, nuts, …… etc).

Mechanical .engineering parts ( shafts , axles, pins, keys, …..etc).

Automobile and motor construction.

Axles, control components.

Gears, connecting rods.

Crank shaft, gear components.

Case Hardening Steels

Chemical Composition of Case Hardening Steel (ladle analysis) according to EN 10084 and similar grades corresponding to ASTM & JIS for examples as follows:

Steel grade Chemical Composition (%by mass ) Corresponding standards
Symbol Mat. No. C Si
Max
Mn P
Max
S
Max
Cr Mo Ni ASTM JIS
16MnCr5 1.7131 0.14
0.19
0.40 1.00
1.30
0.035 0.035 0.80
1.10
- - - -
20MnCr5 1.7147 0.17
0.22
0.40 1.10
1.40
0.035 0.035 1.00
1.30
- - - 2MnC21
18CrNiMo7-6 1.6587 0.15
0.21
0.40 0.50
0.90
0.035 0.035 1.50
1.80
0.25
0.35
1.40
1.70
4317 -
Steel with born (B) can be produced
Other steels grades can be produced according to EN10084 and by mutual agreement.

Max. Brinell hardness for products supplied in several conditions according to EN 10084:

Steel grade HB Max
Symbol Mat. No. S
Max(1)
A
Max(2)
TH (3) FP (4)
16MnCr5 1.7131 - 207 156 - 207 140 - 187
20MnCr5 1.7147 255 217 170 - 217 152 - 201
18CrNiMo7-6 1.6587 255 229 179 - 229 159 -207
Treated to improve Shearability.
Annealed to max. Hardness requirement.
Treated to hardness range.
Treated to ferrite- pearlite structure and hardness range.

Range of Applications

Structure and small machine components.

Cardan joints gear, building and wheels

Cardan joints gear, building and wheels

Parts of control.

Automobile and motor construction

Free Cutting Steels

Chemical Composition of Free Cutting Steel (ladle analysis) according to EN 10087 and similar grades corresponding to ASTM and JIS For examples as follows:

Steel grade Chemical Composition (%by mass ) Corresponding standards
Symbol Mat. No. C Si Max Mn P Max S Max Pb ASTM JIS
9SMn28
(11SMn30)
1.0715 ≤ 0.14 0.05 0.90
1.30
0.11 0.27
0.33
- 1214 SUM22
9SMnPb28
(11SMnPb30)
1.0718 ≤ 0.14 0.05 0.90
1.30
0.11 0.27
0.33
0.20
0.35
12L14 SUM22L
9SMn36
(11SMn37)
1.0736 ≤ 0.14 0.05 1.00
1.50
0.11 0.34
0.40
- 1215 SUM25
9SMnPb36
(11SMnPb37)
1.0737 ≤ 0.14 0.05 1.00
1.50
0.11 0.34
0.40
0.20
0.35
- -
36SMn14 1.0764 0.32
0.39
0.40 1.30
1.70
0.06 0.10
0.18
- - -
36SMnPb14 1.0765 0.32
0.39
0.40 1.30
1.70
0.06 0.10
0.18
0.15
0.35
- -

Other steels grades can be produced according to EN10087 and by mutual agreement.

Mechanical properties of free cutting steel grades according to EN10087:
Steel Grade Delivery Condition Rm N/mm2 Re N/mm2 A% HB
Symbol Mat. No.
9SMn28
(11SMn30)
1.0715 U 380
570
- - 112
169
9SMnPb28
(11SMnPb30)
1.0718
9SMn36
(11SMn37
1.0736 U 380
570
- - 112
169
9SMnPb36
(11SMnPb37)
1.0737
36SMn14 1.0764 U 560
750
- - 166
222
36SMnPb14 1.0765

Mechanical properties are specified for bar diameter = 17-40mm, other sizes acc.to EN 10087

U Untreated.
Rm Tensile Strength.
Re Upper yield stress or, if no yield phenomenon occurs, 0.2 % proof stress, Rp0.2
A% Percentage elongation after fracture
HB Brinell hardness

Range of Applications

Parts finished by machining.

Spring Steel

Chemical Composition of Spring Steel (ladle analysis) according to EN 10089-DIN 17221 and similar grades corresponding to ASTM & JIS for examples as follows:

Steel grade Chemical Composition (%by mass ) Corresponding standards
Symbol Mat. No. C Si Max Mn P Max S Max Cr V ASTM JIS
55Si7 1.5026 0.52
0.60
1.60
2.00
0.60
0.90
0.030 0.030 - - 9255 -
60SiCr7 1.7108 0.57
0..65
1.60
2.00
0.70
1.00
0.030 0.030 0.20
0.40
- 9262 -
55Cr3 1.7176 0.52
0.59
-
0.40
0.70
1.00
0.030 0.030 0.70
1.00
- 5155 SUP 9
51CrV4 1.8159 0.47
0.55
-
0.40
0.70
1.10
0.030 0.030 0.90
1.20
0.10
0.25
6150 SUP 10

Other steel grades can be produced according to Standard and by mutual agreement.

Mechanical properties of spring steel grades according to EN10088:
Steel Grade Heat Treatment Condition HB Max
Symbol Mat. No.
55Si7 1.5026 A 245
60SiCr7 1.7108 A 248
55Cr3 1.7176 A 248
50CrV4 1.8159 A 248

Range of Applications

All type of wires and springs.


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