Issue date: 04.2008

Automotive ApplicAtion

piston Rings and piston Ring elementsSteels

* converted from tensile strength according to DIN 50 150

A

Designa-tion

Reference Grade Hard-ness

main Application

KS MED AE DIN

GOE 61 3 ~1.4112 Cr Steel 17% Cr min.

380-450 HV30 Compression rings, plated

GOE 62 15 Cr-Si Steel 500-600 HV30* Coil springs

GOE 64 2 51E 529 ~SAE 9254 ~1.7103 Cr-Si Steel 450-550

HV30 Compression rings, plated

GOE 65B 23 ~1.4028Cr Steel,

11% Cr min. C low

270-420 HV30

I-section rings, rails, nitrided

GOE 65C ~1.4109 Cr Steel, 11% min.

300-420 HV1

Compression rings, I-section rings, rails, nitrided

GOE 65D ~1.4109 Cr Steel, 11% min.

360-450 HV1

Compression rings, I-section rings, rails, Cr-plated

GOE 66 21 51L 53D

528533 ~1.4112 Cr Steel,

17% Cr min.300-400 HV 30

Compression rings, rails, nitrided

GOE 67 GOE 166 96 523

532 AISI 201Cr Steel,

16% Cr min. austenitic

190-450 HV0.5

Expander-spacer (also nitrided)

GOE 67C 532 AISI 304 ~1.4301

Cr Steel, 16% Cr min.

austenitic

190-450 HV0.5

Expander-spacer (also nitrided)

GOE 68A 12 53A 513 ~Cf70, ~1.1249 Carbon Steel 480-550

HV30Rails,

Cr-plated

GOE 68B 17 52B 522 Carbon Steel 500-600 HV30 Expander-spacer

Issue date: 10.97

Material: Chromium steel, 17% Cr min, according to ISO 6621-3, subclass 61*

Chemical composition (%): C: 0.8 - 0.95 Si: max 1.0 Mn: max 1.0 P: max 0.045 S: max 0.04 Cr: 17.0 - 19.0 Mo: 0.9 - 1.5 V: 0.07 - 0.15 Cu: max 0.3 Microstructure: Tempered martensite with uniformly distributed carbides

Mechanical properties: Hardness: 380 - 450 HV 30 38 - 44 HRC Modulus of elasticity: approx. 230000 MPa

Coefficient of thermal expansion 10-6/K: 20 - 100°C: 10.5 20 - 200°C: 11.0 20 - 300°C: 11.0 20 - 400°C: 11.5 20 - 500°C: 12.0

Density: 7.7 g/cm3

etched with HNO3 500 : 1

* ISO 6621-3 / Draft Oct. 1997Note: Hardness testing to DIN EN 10109-1

AReference: KS 3 (1.4112)

Material SpecificationPiston Rings

GOE 61

Material Specification Piston Rings

GOE 62Referenz: KS 15

Material: Spring steel * according to ISO 6621-3, subclass 62

Chemical composition (%): C: 0.50 - 0.60 Si: 1.20 - 1.65 Mn: 0.50 - 0.80 P: max 0.03 S: max 0.025 Cr: 0.50 - 0.80 Microstructure): Tempered martensite

Mechanical properties: Tensile strength: 1800 - 2000 MPa Yield point: approx. 0.9 x tensile strength MPa Modulus of elasticity: approx. 217.000 MPa

Density: 7.85 g/cm3

etched with HNO 3 500 : 1

* Reduced heat seat according ISO 6621-5Note: The tensile strength must be determined with the wire uncoiled.

AIssue date: 03.2004

Issue date: 10.01

Material: Chromium silicon carbon steel, according to ISO 6621-3, subclass 64

Chemical composition (%): C: 0.5 - 0.6 Si: 1.2 - 1.65 Mn: 0.5 - 0.8 P: max 0.035 S: max 0.04 Cr: 0.5 - 0.8 Microstructure: Tempered martensite

Mechanical properties: Hardness: 400 - 550 HV 30 40 - 53 HRC Modulus of elasticity: approx. 210000 MPa

Density: 7.8 g/cm3

etched with HNO3 500 : 1

Note: Hardness testing to DIN EN ISO 6508-1

AReference: KS 2 (1.7103), MED 51E (SAE 9254), AE 529

Material SpecificationPiston Rings

GOE 64

Issue date: 10.97

Material: Chromium steel, 11% Cr min, according to ISO 6621-3, subclass 65*

Chemical composition (%): C: 0.25 - 0.45 Si: max 1.0 Mn: max 1.0 P: max 0.045 S: max 0.03 Cr: 11.0 - 15.0 Microstructure: Tempered martensite with uniformly distributed carbides

Mechanical properties: Hardness: 270 - 420 HV 30 Modulus of elasticity: approx. 220000 MPa

Coefficient of thermal expansion 10-6/K: 20 - 100°C: 10.5 20 - 200°C: 11.0 20 - 300°C: 11.0 20 - 400°C: 11.5 20 - 500°C: 12.0

Density: 7.7 g/cm3

etched with HNO3 500 : 1

* ISO 6621-3 / Draft Sept. 1997Note: The hardness applies to the core region of the cross section of the ring.

AReference: KS 23 (1.4028)

Material SpecificationPiston Rings

GOE 65B

Material: Cr steel, 11 % Cr min, nitrided according to ISO 6621-3, subclass 65

Chemical composition (%): C: 0.5 - 0.75 Si: max 1.0 Mn: max 1.0 P: max 0.045 S: max 0.04 Cr: 11.0 - 15.0 V: max 0.1 Mo: max 0.6 Microstructure: Tempered martensite with uniformly distributed carbides

Mechanical properties: Hardness: 300 - 420 HV 1 Modulus of elasticity: approx. 210000 MPa

Coefficient of thermal expansion 10-6/K: 20 - 100°C: 10.5 20 - 200°C: 11.0 20 - 300°C: 11.0 20 - 400°C: 11.5 20 - 500°C: 12.0

Density: 7.7 g/cm3

etched with HNO3 500 : 1

Note: The hardness applies to the core region of the cross section of the ring.

AReference: similar to DIN 1.4109, AE 525

Material SpecificationPiston Rings

GOE 65CIssue date: 10.01

Material: Cr steel, 11 % Cr min, according to ISO 6621-3, subclass 65

Chemical composition (%): C: 0.5 - 0.75 Si: max 1.0 Mn: max.1.0 P: max 0.045 S: max 0.04 Cr: 11.0 - 15.0 V: max 0.1 Mo: max 0.6 Microstructure: Tempered martensite with uniformly distributed carbides

Mechanical properties: Hardness: 360 - 450 HV 1 Modulus of elasticity: approx. 210000 MPa

Coefficient of thermal expansion 10-6/K: 20 - 100°C: 10.5 20 - 200°C: 11.0 20 - 300°C: 11.0 20 - 400°C: 11.5 20 - 500°C: 12.0

Density: 7.7 g/cm3

etched with HNO3 500 : 1

Note: 1. Hardness testing according to DIN EN 10 109-1 2. The hardness applies to the core region of the cross section of the ring.

AReference: similar to DIN 1.4109

Material SpecificationPiston Rings

GOE 65DIssue date: 01.01

Material: Chromium steel, 17 % Cr min, according to ISO 6621-3, subclass 66

Chemical composition (%): C: 0.8 - 0.95 Si: max 1.0 Mn: max 1.0 P: max 0.045 S: max 0.04 Cr: 17.0 - 19.0 Mo: 0.9 - 1.5 V: 0.07 - 0.15 Cu: max 0.3 Microstructure: Tempered martensite with uniformly distributed carbides

Mechanical properties: Hardness: 300 - 400 HV 30 Modulus of elasticity: approx. 220000 MPa

Coefficient of thermal expansion 10-6/K: 20 - 100°C: 10.5 20 - 200°C: 11.0 20 - 300°C: 11.0 20 - 400°C: 11.5 20 - 500°C: 12.0

Density: 7.7 g/cm3

etched with HNO3 500 : 1

Note: The hardness applies to the core region of the cross section of the ring.

AReference: KS 21, MED 51L+53D, AE 528+533

Material SpecificationPiston Rings

GOE 66Issue date: 10.01

Material: Chromium steel, 16 % Cr min according to ISO 6621-3, subclass 67*

Chemical composition (%): C: max 0.15 Si: max 1.0 Mn: 5.5 - 7.5 P: max 0.06 S: max 0.03 Cr: 16.0 - 18.0 Ni: 3.5 - 5.5 N: max 0.25 Microstructure: Predominantly austenite

Mechanical properties: Hardness: 190 – 450 HV 0.5 Modulus of elasticity: 190 000 MPa**

* ISO 6621-3 / Draft Sept. 1997** Modulus of elasticity from literature sources

A

Issue date: 10.97Reference: GOE 166 (AISI 201), MED 96, AE 523+532

Material Specification Piston Rings

GOE 67

Material Specification Piston Rings

GOE 67 CReference: AISI 304, AE 532, AE 532N

Material: Chromium steel, 16 % Cr min according to ISO 6621-3, subclass 67

Chemical composition in (%): C: max 0.08 Si: max 1.00 Mn: max 2.0 P: max 0.045 S: max 0.03 Cr: 18.0 - 20.0 Ni: 8.0 - 10.5 Microstructure: Predominantly austenite

Mechanical properties: Hardness: 190 – 450 HV 0.5 Modulus of elasticity: 190 000 MPa**

etched with Berala II 500 : 1

** Modulus of elasticity from literature sources

AIssue date: 08.2003

Material: Spring steel, according to ISO 6621-3, subclass 68

Chemical composition (%): C: 0.65 - 0.8 Si: 0.15 - 0.35 Mn: 0.3 - 1.0 Microstructure: Tempered martensite

Mechanical properties: Hardness: 450 - 550 HV 30 Tensile strength: 1470 - 1800 MPa Modulus of elasticity: approx. 210000 MPa

etched with HNO3 500 : 1

Note: The hardness values are approximate; the critical property is the tensile strength, which must be measuredwith the material uncoiled.

AReference: KS 21, MED 53A, AE 513, AE 531

Material SpecificationPiston Rings

GOE 68AIssue date: 10.01

Material: Spring steel, according to ISO 6621-3, subclass 68*

Chemical composition (%): C: 0.7 - 0.85 Si: 0.15 - 0.35 Mn: 0.35 - 0.7 P: max 0.045 Si: max 0.045

Other elements may be present as impurities. Microstructure: Tempered martensite

Mechanical properties: Hardness: 500 - 600 HV 30 Modulus of elasticity: approx. 210000 MPa

* ISO 6621-3 / Draft Sept. 1997

AReference: KS 17, MED 52B, AE 522

Material SpecificationPiston Rings

GOE 68BIssue date: 10.97